Publication statistics
Pub. period:1998-2013
Pub. count:106
Number of co-authors:173
Co-authors
Number of publications with 3 favourite co-authors:
Hans-Werner Gellersen:18Dagmar Kern:11Paul Holleis:10 Productive colleagues
Albrecht Schmidt's 3 most productive colleagues in number of publications:
Manfred Tscheligi:105Yvonne Rogers:93Mark Billinghurst:92
“
... there are no simple 'right' answers for most web design questions (at least not for the important ones). What works is good, integrated design that fills a need--carefully thought out, well executed, and tested.
”
-- Steve Krug, Don't Make Me Think, p. 136
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Albrecht SchmidtProf.
Personal Homepage:
albrecht-schmidt.blogspot.com/Current place of employment:
University of StuttgartI am a professor at the University of Stuttgart. My central research interests are novel user interfaces and innovative applications enabled by ubiquitous computing. Before moving to Stuttgart I was a professor at the Univeristy of Duisburg-Essen, had a joined position between the Fraunhofer Institute for Intelligent Analysis and Information Systems (IAIS) and the University of Bonn. I studied computer science in Ulm and Manchester and afterwards worked as a researcher at the University of Karlsruhe and at Lancaster University. There I completed in 2003 my PhD thesis on the topic of "Ubiquitous Computing - Computing in Context". Before I became professor at the B-IT-Center I headed the DFG-funded "Embedded Interaction Research Group" at the Ludwig-Maximilians University in Munich. My teaching and research interests are in media informatics and in particular in the areas of user interface engineering, pervasive computing and mobile interactive systems.
Publications by Albrecht Schmidt (bibliography)
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Schmidt, Albrecht, Bulling, Andreas and Holz, Christian (eds.) 4th Augmented Human International Conference March 7-8, 2013, Stuttgart, Germany.
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Schmidt, Albrecht, Bulling, Andreas and Holz, Christian (eds.) Proceedings of the 4th Augmented Human International Conference AH 2013 March 7-8, 2013, Stuttgart, Germany.
Schmidt, Albrecht (2012). Context-Aware Computing: Context-Awareness, Context-Aware User Interfaces, and Implicit Interaction. Retrieved 19 June 2013 from [URL to be defined - in press]
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Korn, Oliver, Schmidt, Albrecht, Hörz, Thomas and Kaupp, Daniel (2012): Assistive system experiment designer ASED: a toolkit for the quantitative evaluation of enhanced assistive systems for impaired persons in production. In: Fourteenth Annual ACM SIGACCESS Conference on Assistive Technologies 2012. pp. 259-260.
“This paper introduces the toolkit ASED: Assistive System Experiment Designer. Combining a specially constructed assembly table and new software it allows measuring the performance of impaired persons when using assistive systems for production environments (ASiPE). The ASiPE design tested using ASED transgresses the state of the art by three enhancements. With the help of ASED we are able to quantify and rank their effects on work quality and performance. The ASED toolkit, however, is not confined to the design tested but can be used for the experimental analysis of every kind of manual process.”
© All rights reserved Korn et al. and/or ACM Press
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Alt, Florian, Shirazi, Alireza Sahami, Schmidt, Albrecht and Atterer, Richard (2012): Bridging waiting times on web pages. In: Proceedings of the 14th Conference on Human-computer interaction with mobile devices and services 2012. pp. 305-308.
“High-speed Internet connectivity makes browsing a convenient task. However, there are many situations in which surfing the web is still slow due to limited bandwidth, slow servers, or complex queries. As a result, loading web pages can take several seconds, making (mobile) browsing cumbersome. We present an approach which makes use of the time spent on waiting for the next page, by bridging the wait with extra cached or preloaded content. We show how the content (e.g., news, Twitter) can be adapted to the user's interests and to the context of use, hence making mobile surfing more comfortable. We compare two approaches: in time-multiplex mode, the entire screen displays bridging content until the loading is finished. In space-multiplex mode, content is displayed alongside the requested content while it loads. We use an HTTP proxy to intercept requests and add JavaScript code, which allows the bridging content from websites of our choice to be inserted. The approach was evaluated with 15 participants, assessing suitable content and usability.”
© All rights reserved Alt et al. and/or ACM Press
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Shirazi, Alireza Sahami, Rohs, Michael, Schleicher, Robert, Kratz, Sven, Müller, Alexander and Schmidt, Albrecht (2011): Real-time nonverbal opinion sharing through mobile phones during sports events. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 307-310.
“Even with the rise of the World Wide Web, TV has remained the most pervasive entertainment medium and is nowadays often used together with other media, which allow for active participation. The idea of connecting non-collocated TV viewers via telecommunication technologies, referred to as Social TV, has recently received considerable attention. Such systems typically include set-top boxes for supporting collaboration. In this research we investigate if real-time opinion sharing about TV shows through a nonverbal (non-textual) iconic UI on mobile phones is reasonable. For this purpose we developed a mobile app, made it available to a large number of users through the Android Market, and conducted an uncontrolled user study in the wild during the soccer world cup 2010. The results of the study indicate that TV viewers who used the app had more fun and felt more connected to other viewers. We also show that by monitoring this channel it is possible to collect sentiments relevant to the broadcasted content in real-time. The collected data exemplify that the aggregated sentiments correspond to important moments, and hence can be used to generate a summary of the event.”
© All rights reserved Shirazi et al. and/or their publisher
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Döring, Tanja, Kern, Dagmar, Marshall, Paul, Pfeiffer, Max, Schöning, Johannes, Gruhn, Volker and Schmidt, Albrecht (2011): Gestural interaction on the steering wheel: reducing the visual demand. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 483-492.
“Cars offer an increasing number of infotainment systems as well as comfort functions that can be controlled by the driver. In our research, we investigate new interaction techniques that aim to make it easier to interact with these systems while driving. We suggest utilizing the steering wheel as an additional interaction surface. In this paper, we present two user studies conducted with a working prototype of a multi-touch steering wheel. In the first, we developed a user-defined steering wheel gesture set, and in the second, we applied the identified gestures and compared their application to conventional user interaction with infotainment systems in terms of driver distraction. The main outcome was that driver's visual demand is reduced significantly by using gestural interaction on the multi-touch steering wheel.”
© All rights reserved Döring et al. and/or their publisher
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Bahamóndez, Elba del Carmen Valderrama, Winkler, Christian and Schmidt, Albrecht (2011): Utilizing multimedia capabilities of mobile phones to support teaching in schools in rural panama. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 935-944.
“Providing good education is one of the major challenges for humanity. In many developing regions in the world improving educational standards is seen as a central building block for improving socio-economic situation of society. Based on our research in Panama we report on how mobile phones can be used as educational tools. In contrast to personal computers mobile phones are widely available and in Panama over 80% of the children have access to phones. We report on four different studies building on one another. We conducted surveys, focus groups, and group interviews with several hundred teachers and pupils to assess opportunities, needs, and threads for using phones in teaching and learning. Based on the feedback received we created a set of use cases and finally evaluated these in a field study in a rural multigrade school in Panama. Our findings suggest that current phones with multimedia capabilities provide a valuable resource for teaching and learning across many subjects. In particular recording of audio and video, programs for drawing, and taking photos were used in very creative and constructive ways beyond the use cases envisioned by us and initial skepticism of parents turned into support.”
© All rights reserved Bahamóndez et al. and/or their publisher
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Beyer, Gilbert, Alt, Florian, Müller, Jörg, Schmidt, Albrecht, Isakovic, Karsten, Klose, Stefan, Schiewe, Manuel and Haulsen, Ivo (2011): Audience behavior around large interactive cylindrical screens. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 1021-1030.
“Non-planar screens, such as columns, have been a popular means for displaying information for a long time. In contrast to traditional displays their digital counterparts are mainly flat and rectangular due to current technological constraints. However, we envision bendable displays to be available in the future, which will allow for creating new forms of displays with new properties. In this paper we explore cylindrical displays as a possible form of such novel public displays. We present a prototype and report on a user study, comparing the influence of the display shape on user behavior and user experience between flat and cylindrical displays. The results indicate that people move more in the vicinity of cylindrical displays and that there is no longer a default position when it comes to interaction. As a result, such displays are especially suitable to keep people in motion and to support gesture-like interaction.”
© All rights reserved Beyer et al. and/or their publisher
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Olsen, Anneli, Schmidt, Albrecht, Marshall, Paul and Sundstedt, Veronica (2011): Using eye tracking for interaction. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 741-744.
“The development of cheaper eye trackers and open source software for eye tracking and gaze interaction brings the possibility to integrate eye tracking into everyday use devices as well as highly specialized equipment. Apart from providing means for analyzing eye movements, eye tracking also offers the possibility of a natural user interaction modality. Gaze control interfaces are already used within assistive applications for disabled users. However, this novel user interaction possibility comes with its own set of limitations and challenges. The aim of this SIG is to provide a forum for Designers, Researchers and Usability Professionals to discuss the role of eye tracking as a user interaction method in the future as well as the technical and user interaction challenges that using eye tracking as an interaction method brings.”
© All rights reserved Olsen et al. and/or their publisher
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Bial, Dominik, Kern, Dagmar, Alt, Florian and Schmidt, Albrecht (2011): Enhancing outdoor navigation systems through vibrotactile feedback. In: Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems 2011. pp. 1273-1278.
“While driving many tasks compete for the attention of the user, mainly via the audio and visual channel. When designing systems depending upon providing feedback to users (e.g., navigation systems), it is a crucial prerequisite to minimize influence on and distraction from the driving task. This becomes even more important when designing systems for the use on motorbikes; space for output devices is scarce, as people are wearing helmets visual feedback is often difficult due to lighting conditions, and audio feedback is limited. In a first step we aimed at creating an understanding as to how information could be communicated in a meaningful way using vibrotactile signals. Therefore, we investigated suitable positions of actuators on the hand, appropriate length of the vibration stimulus, and different vibration patterns. We built a first prototype with 4 vibration actuators attached to the fingertips and asked 4 participants to test our prototype while driving. With this work we envision to lay the foundations for vibrotactile support in navigation systems.”
© All rights reserved Bial et al. and/or their publisher
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Schmidt, Albrecht, Langheinrich, Marc and Kersting, Kristian (2011): Perception beyond the Here and Now. In IEEE Computer, 44 (2) p. 86–88.
“A multitude of senses provide us with information about the here and now. What we see, hear, and feel in turn shape how we perceive our surroundings and understand the world. Our senses are extremely limited, however, and ever since humans began creating and using technology, they have tried to enhance their natural perception in various ways.”
© All rights reserved Schmidt et al. and/or IEEE
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Schmidt, Albrecht (2011): Engineering interactive ubiquitous computing systems. In: ACM SIGCHI 2011 Symposium on Engineering Interactive Computing Systems 2011. pp. 229-230.
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Seifert, Julian, Pfleging, Bastian, Bahamóndez, Elba del Carmen Valderrama, Hermes, Martin, Rukzio, Enrico and Schmidt, Albrecht (2011): MobiDev: a tool for creating apps on mobile phones. In: Proceedings of 13th Conference on Human-computer interaction with mobile devices and services 2011. pp. 109-112.
“Currently, the development of mobile applications heavily relies on using conventional computers as development platform. MobiDev enables people in emerging countries without access to a computer but to a cell phone to develop their own locally relevant applications. The goal of the Mo-biDev project is to simplify development and deployment of applications directly on mobile phones. As a first step, we focus on the design of applications and try to support the computer science curriculum in developing countries to bootstrap the mobile developer culture and community. MobiDev allows the creation of graphical user interfaces (GUI) using various concepts. We present the results of a first system evaluation that show how people perceive the concepts for UI creation of MobiDev.”
© All rights reserved Seifert et al. and/or ACM Press
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Brewster, Stephen, Jones, Matt, Murray-Smith, Roderick, Nanavati, A. A., Rajput, N., Schmidt, Albrecht and Turunen, M. (2011): We need to talk: rediscovering audio for universal access. In: Proceedings of 13th Conference on Human-computer interaction with mobile devices and services 2011. pp. 715-716.
“"In all the wonderful worlds that writing opens, the spoken word still resides and lives. Written texts all have to be related somehow, directly or indirectly, to the world of sound, the natural habitat of language, to yield their meanings." Only 22% of the human population accesses the Internet. The larger fraction of the world cannot read or write. Worldwide, 284 million people are visually impaired. And yet, there are 5.3 billion mobile subscribers, and their numbers are increasing. Much of the mobile work by HCI researchers explores a future world populated by high-end devices and relatively affluent users. This panel turns to consider the hundreds of millions of people for whom such sophistication will not be realised for many years to come. How should we design interfaces and services that are relevant and beneficial for them?”
© All rights reserved Brewster et al. and/or ACM Press
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Ziegler, Jürgen and Schmidt, Albrecht (eds.) Mensch and Computer 2010 September 12-15, 2010, Duisburg.
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Alt, Florian, Shirazi, Alireza Sahami, Schmidt, Albrecht, Kramer, Urs and Nawaz, Zahid (2010): Location-based crowdsourcing: extending crowdsourcing to the real world. In: Proceedings of the Sixth Nordic Conference on Human-Computer Interaction 2010. pp. 13-22.
“The WWW and the mobile phone have become an essential means for sharing implicitly and explicitly generated information and a communication platform for many people. With the increasing ubiquity of location sensing included in mobile devices we investigate the arising opportunities for mobile crowdsourcing making use of the real world context. In this paper we assess how the idea of user-generated content, web-based crowdsourcing, and mobile electronic coordination can be combined to extend crowdsourcing beyond the digital domain and link it to tasks in the real world. To explore our concept we implemented a crowd-sourcing platform that integrates location as a parameter for distributing tasks to workers. In the paper we describe the concept and design of the platform and discuss the results of two user studies. Overall the findings show that integrating tasks in the physical world is useful and feasible. We observed that (1) mobile workers prefer to pull tasks rather than getting them pushed, (2) requests for pictures were the most favored tasks, and (3) users tended to solve tasks mainly in close proximity to their homes. Based on this, we discuss issues that should be considered during designing mobile crowdsourcing applications.”
© All rights reserved Alt et al. and/or their publisher
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Döring, Tanja, Shirazi, Alireza Sahami and Schmidt, Albrecht (2010): Exploring gesture-based interaction techniques in multi-display environments with mobile phones and a multi-touch table. In: Proceedings of the 2010 International Conference on Advanced Visual Interfaces 2010. p. 419.
“In this paper, we explore the potential of combining shared and interactive displays (e.g. a multi-touch table) with personal devices (e.g. mobile phones) as an important class of heterogeneous multi-display environments. Within six case studies applications and interactions were invented and implemented that utilize the potential of such heterogeneous multi-display environments. We were in particular interested how to design systems that include interaction across different displays and how to manage public and private information in a group setting. One case study, a digital card game, highlights these design challenges. We explore different natural ways of interaction, including touching the table as well as motion gestures with mobile phones. With this application we provide a use case to discuss gestures combining mobile phones with tabletop surfaces, as well as to explore a private-public display setting. First results showed that combining tables and mobile phones provide a suitable and understandable way for interaction in these settings.”
© All rights reserved Döring et al. and/or their publisher
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Reischach, Felix von, Dubach, Erica, Michahelles, Florian and Schmidt, Albrecht (2010): An evaluation of product review modalities for mobile phones. In: Proceedings of 12th Conference on Human-computer interaction with mobile devices and services 2010. pp. 199-208.
“Research has shown that product reviews on the Internet not only support consumers when shopping, but also lead to increased sales for retailers. Recent approaches successfully use smart phones to directly relate products (e.g. via barcode or RFID) to corresponding reviews, making these available to consumers on the go. However, it is unknown what modality (star ratings/text/video) users consider useful for creating reviews and using reviews on their mobile phone, and how the preferred modalities are different from those on the Web. To shed light on this we conduct two experiments, one of them in a quasi-realistic shopping environment. The results indicate that, in contrast to the known approaches, stars and pre-structured text blocks should be implemented on mobile phones rather than long texts and videos. Users prefer less and rather well-aggregated product information while on the go. This accounts both for entering and, surprisingly, also for using product reviews.”
© All rights reserved Reischach et al. and/or their publisher
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Shirazi, Alireza Sahami, Kubitza, Thomas, Alt, Florian, Pfleging, Bastian and Schmidt, Albrecht (2010): WEtransport: a context-based ride sharing platform. In: Proceedings of the 2010 International Conference on Uniquitous Computing 2010. pp. 425-426.
“In densely populated urban areas high amounts of traffic pose a major problem, which affects the environment, economy, and our lives. From a user's perspective, the main issues include delays due to traffic jams, lack of parking space and high costs due to increasing fuel prices (e.g., if commuting long distances). Collective transportation (CT), e.g., public transport systems, provides a partly solution to these issues. Yet, CT does not support door-to-door transportation hence reducing convenience; it might be limited in off-peak hours, and it is still a cost factor when traveling long distances. A solution to these issues is ride sharing, an evolving form of CT making alternative transportation more affordable. In this paper we present a modular, context-aware ride sharing platform. We aim at enhancing convenience, reliability, and affordability of different forms of ride sharing by means of context data. Addition-ally our approach supports an easy server- and client-side expansion due to the modular platform structure.”
© All rights reserved Shirazi et al. and/or their publisher
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Schmidt, Albrecht, Friday, Adrian, Gellersen, Hans W. and Mattern, Friedemann (2010): Ubiquitous computing for sustainable energy (UCSE2010). In: Proceedings of the 2010 International Conference on Uniquitous Computing 2010. pp. 495-496.
“Providing sustainable energy is one of the fundamental challenges for mankind. With energy usage being a part of everyday activities and with the increasingly diversity of energy creation this is an inherently multi-disciplinary problem. Transportation and travel, heating and cooling, manu-facturing and production are major areas in which energy is used and all these domains become more and more linked to ubiquitous computing. With an increase in decentralized energy provision, ranging from energy harvesting in devices to personal green power plants, a great potential for creating sustainable energy arises, however at the cost of a higher complexity of the distribution network and storage mechanisms. Overall we believe that research in ubiquitous computing can provide important contributions for a world with sustainable energy. In this workshop we hope to get people from different disciplines together to share their visions and insights on how to conserve, efficiently produce, use, and distribute energy.”
© All rights reserved Schmidt et al. and/or their publisher
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Shirazi, Alireza Sahami, Sarjanoja, Ari-Heikki, Alt, Florian, Schmidt, Albrecht and Hkkilä, Jonna (2010): Understanding the impact of abstracted audio preview of SMS. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 1735-1738.
“Real-time transcription has been shown to be valuable in facilitating non-native speakers' comprehension in real-time communication. Automated speech recognition (ASR) technology is a critical ingredient for its practical deployment. This paper presents a series of studies investigating how the quality of transcripts generated by an ASR system impacts user comprehension and subjective evaluation. Experiments are first presented comparing performance across three different transcription conditions: no transcript, a”
© All rights reserved Shirazi et al. and/or their publisher
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Kern, Dagmar, Marshall, Paul and Schmidt, Albrecht (2010): Gazemarks: gaze-based visual placeholders to ease attention switching. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 2093-2102.
“Many tasks require attention switching. For example, searching for information on one sheet of paper and then entering this information onto another one. With paper we see that people use fingers or objects as placeholders. Using these simple aids, the process of switching attention between displays can be simplified and speeded up. With large or multiple visual displays we have many tasks where both attention areas are on the screen and where using a finger as a placeholder is not suitable. One way users deal with this is to use the mouse and highlight their current focus. However, this also has its limitations -- in particular in environments where there is no pointing device. Our approach is to utilize the user's gaze position to provide a visual placeholder. The last area where a user fixated on the screen (before moving their attention away) is highlighted; we call this visual reminder a Gazemark. Gazemarks ease orientation and the resumption of the interrupted task when coming back to this display. In this paper we report on a study where the effectiveness of using Gazemarks was investigated, in particular we show how they can ease attention switching. Our results show faster completion times for a resumed simple visual search task when using this technique. The paper analyzes relevant parameters for the implementation of Gazemarks and discusses some further application areas for this approach.”
© All rights reserved Kern et al. and/or their publisher
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Schmidt, Albrecht, Dey, Anind K., Kun, Andrew L. and Spiessl, Wolfgang (2010): Automotive user interfaces: human computer interaction in the car. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3177-3180.
“Cars have become complex interactive systems. Mechanical controls and electrical systems are transformed to the digital realm. It is common that drivers operate a vehicle and, at the same time, interact with a variety of devices and applications. Texting while driving, looking up an address for the navigation system, and taking a phone call are just some common examples that add value for the driver, but also increase the risk of driving. Novel interaction technologies create many opportunities for designing useful and attractive in-car user interfaces. With technologies that assist the user in driving, such as assistive cruise control and lane keeping, the user interface is essential to the way people perceive the driving experience. New means for user interface development and interaction design are required as the number of factors influencing the design space for automotive user interfaces is increasing. In comparison to other domains, a trial and error approach while the product is already in the market is not acceptable as the cost of failure may be fatal. User interface design in the automotive domain is relevant across many areas ranging from primary driving control, to assisted functions, to navigation, information services, entertainment and games.”
© All rights reserved Schmidt et al. and/or their publisher
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Obrist, Marianna, Tscheligi, Manfred, Ruyter, Boris de and Schmidt, Albrecht (2010): Contextual user experience: how to reflect it in interaction designs?. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3197-3200.
“User experience is highly influenced and even changed by the context in which it occurs. In this SIG session we want to discuss how specific contexts influence various aspects of user experience. So far, both concepts "user experience" and "context" have been discussed a lot to various extent and in different dimensions. With this SIG, we aim to bring both concepts together, highlighting the differences arising from the consideration of different specific contexts and their relevant user experience factors. Thus, we reach a more comprehensive understanding of "contextual user experience", which opens up different roads for research and challenges the HCI community in all design and development phases. We will discuss user experience as focal point of user interface and interaction design bound to specific situational cases.”
© All rights reserved Obrist et al. and/or their publisher
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Pfeiffer, Max, Kern, Dagmar, Schöning, Johannes, Döring, Tanja, Krüger, Antonio and Schmidt, Albrecht (2010): A multi-touch enabled steering wheel: exploring the design space. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3355-3360.
“Cars offer an increasing number of infotainment systems as well as comfort functions that can be controlled by the driver. With our research we investigate new interaction techniques that aim to make it easier to interact with these systems while driving. In contrast to the standard approach of combining all functions into hierarchical menus controlled by a multifunctional controller or a touch screen we suggest to utilize the space on the steering wheel as additional interaction surface. In this paper we show the design challenges that arise for multi-touch interaction on a steering wheel. In particular we investigate how to deal with input and output while driving and hence rotating the wheel. We describe the details of a functional prototype of a multi-touch steering wheel that is based on FTIR and a projector, which was built to explore experimentally the user experience created. In an initial study with 12 participants we show that the approach has a general utility and that people can use gestures for controlling applications intuitively but have difficulties to imagine gestures to select applications.”
© All rights reserved Pfeiffer et al. and/or their publisher
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Doering, Tanja, Pfleging, Bastian, Kray, Christian and Schmidt, Albrecht (2010): Design by physical composition for complex tangible user interfaces. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3541-3546.
“In this paper, we present a novel approach to create devices with tangible user interfaces by physical com-position. While the separation of the user interface from the application logic has a long tradition in software engineering, for products with tangible user interfaces there is no equivalent approach that realizes a true separation and flexible combination of interface components, underlying technology, and software parts. We propose a novel concept that is based on an inner Core for the basic technical and software platform of a product and an outer Shell that builds a flexible and ex-changeable tangible user interface from passive components. Using vision-based tracking, we can realize a clear separation between the components. No wiring is necessary. This paper introduces our novel approach and presents a first working prototype as well as initial results from its application in a design workshop.”
© All rights reserved Doering et al. and/or their publisher
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Bahamóndez, Elba del Carmen Valderrama and Schmidt, Albrecht (2010): A survey to assess the potential of mobile phones as a learning platform for panama. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3667-3672.
“Education is a major concern in developing countries. We believe that new and emerging technologies offer hope in improving their educational systems. While the use of personal computers in developing countries is still very low, they have seen a widespread adoption of mobile phones in recent years. Since mobile phones have become small computing platforms, this inspired us to investigate their potential as educational tools. In this paper we report on a large survey (300 school children, 85 teachers) that was carried out in Panama to assess the status quo of technology use, as well as the initial ideas of the potential of using mobile phones in the context of school education. Results show that there is a high proliferation of mobile phones among school children, and that teachers and pupils were all able to envision using mobile phones for learning purposes. The results indicate that mobile devices have the potential to integrate into existing learning contexts, as well as enable new learning contexts.”
© All rights reserved Bahamóndez and Schmidt and/or their publisher
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Pfleging, Bastian, Bahamóndez, Elba del Carmen Valderrama, Schmidt, Albrecht, Hermes, Martin and Nolte, Johannes (2010): MobiDev: a mobile development kit for combined paper-based and in-situ programming on the mobile phone. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3733-3738.
“In this paper we present MobiDev, a development kit that allows the creation of applications for mobile devices by developing directly on a mobile phone and by using paper-based sketches as a starting point for creating the user interface (UI). Although programming mobile applications on a computer has a well defined development structure, developing a mobile application on the mobile phone instead offers some advantages: (1) it allows people without access to a computer but to a mobile phone to create mobile applications and (2) it supports the development of applications which employ enhanced mobile phone features that are not fully supported by current desktop development environments. Users draw UI sketches on paper (similar to a paper prototype) as the initial step in an evolutionary UI development process to speed up the development of the application and to minimize the text input effort.”
© All rights reserved Pfleging et al. and/or their publisher
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Schmidt, Albrecht, Spiessl, Wolfgang and Kern, Dagmar (2010): Driving Automotive User Interface Research. In IEEE Pervasive Computing, 9 pp. 85-88.
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Doering, Tanja, Beckhaus, Steffi and Schmidt, Albrecht (2009): Towards a sensible integration of paper-based tangible user interfaces into creative work processes. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 4627-4632.
“We live in a hybrid world where standard computers with graphical user interfaces (GUIs) have become an integral part of our daily life. Additionally, novel user interfaces like tangible user interfaces (TUIs) are among emerging interaction styles that offer new potential as tools for supporting creative tasks and weak-structured workflows. In order to meet the users' needs, the most suitable user interface for a task should be chosen and different kinds of user interfaces have to be integrated appropriately. We addressed these topics and applied a generative framework to structure and analyze a creative work process in the domain of Art History. On this basis, we designed the integration of TUI and GUI elements and constructed as well as tested a tabletop TUI to support creative work.”
© All rights reserved Doering et al. and/or ACM Press
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Kern, Dagmar, Schmidt, Albrecht, Arnsmann, Jonas, Appelmann, Thorsten, Pararasasegaran, Nillakshi and Piepiera, Benjamin (2009): Writing to your car: handwritten text input while driving. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 4705-4710.
“For in-car navigation, information and entertainment systems, text input is increasingly important. We investigate handwriting as a text input modality and assess where to best position the input surface and how to provide feedback. For this purpose, we created different prototypes that allow text input on the steering wheel and in the central console, as well as visual feedback on the input surface and on the dashboard. The results of the study indicate that handwritten text input on the steering wheel is well-received by the users and that the visual feedback should be presented in the dashboard area or on the steering wheel. We also observed that the number of corrective actions and the remaining errors were significantly smaller (25% less) on the steering wheel than in the central console and that entering text while driving made people drive slower.”
© All rights reserved Kern et al. and/or ACM Press
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Kern, Dagmar, Marshall, Paul, Hornecker, Eva, Schmidt, Albrecht and Rogers, Yvonne (2009): Enhancing Navigation Information with Tactile Output Embedded into the Steering Wheel. In: Proceedings of Pervasive 2009. pp. 42-58.
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Shirazi, Alireza Sahami, Alt, Florian, Schmidt, Albrecht, Sarjanoja, Ari-Heikki, Hynninen, Lotta, Häkkilä, Jonna and Holleis, Paul (2009): Emotion sharing via self-composed melodies on mobile phones. In: Proceedings of 11th Conference on Human-computer interaction with mobile devices and services 2009. p. 30.
“In their role as personal communication devices, mobile phones are a natural choice for sharing and communicating emotions. However, their functionalities are currently very limited in power to express affective messages. In this paper, we describe the design of a system that allows users to easily compose melodies and share them via mobile phones. We show that by using these melodies information about the current emotional state of the sender can be expressed and recognized synchronously by the receiver in a simple, quick, and unobtrusive way. Further, we reveal that self-composed melodies have a stronger impact than pre-composed or downloaded messages, similar to crafted pieces of art offered to a beloved person. We then present findings from a user study that assesses the implementation of a functional prototype and the adequacy of the system for emotional communication.”
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Shirazi, Alireza Sahami, Döring, Tanja, Parvahan, Pouyan, Ahrens, Bernd and Schmidt, Albrecht (2009): Poker surface: combining a multi-touch table and mobile phones in interactive card games. In: Proceedings of 11th Conference on Human-computer interaction with mobile devices and services 2009. p. 73.
“In this paper, we introduce the design and implementation of a digital card game that combines mobile phone gestures and multi-touch tabletop interactions. Conceptually based on interactions in traditional card games, our Poker game application explores different natural ways of interaction, including touching the table as well as tilting, throwing, and shaking a mobile phone. By exemplarily translating traditional gestures into the digital domain, we provide a use case to discuss useful gestures combing mobile phones with tabletop surfaces, as well as to explore a private-public display setting for digital card games at interactive tables. Additionally, the mobile phone provides a tangible feeling similar to physical cards. The preliminary user study showed that users preferred using mobile phones for interaction compared to direct interaction on the multi-touch table.”
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Shirazi, Alireza Sahami, Winkler, Christian and Schmidt, Albrecht (2009): Flashlight interaction: a study on mobile phone interaction techniques with large displays. In: Proceedings of 11th Conference on Human-computer interaction with mobile devices and services 2009. p. 93.
“In this paper, we introduce Flashlight interaction, a new approach to light-based interaction between mobile phones and large screens by using the phone camera flashlight. Using a mobile phone as an interaction device with large screens has been explored in various projects. Mobile phones are enhanced with different sensors and provide opportunities to be used as an interaction device with other devices such as a large display. Our approach supports to set up a private-public display setting and provide simple means for interaction without a wireless connectivity. Our user study results indicate that the interaction is easy to perform and understand due to the direct mapping between the phone movement and the response on the screen.”
© All rights reserved Shirazi et al. and/or their publisher
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Häkkilä, Jonna, Schmidt, Albrecht, Mäntyjärvi, Jani, Sahami, Alireza, Ĺkerman, Panu and Dey, Anind K. (2009): Context-Aware Mobile Media and Social Networks. In: Proceedings of 11th Conference on Human-computer interaction with mobile devices and services 2009. p. 108.
“Context-awareness is one of the rising trends of future mobile technology, and due to advances in technology development, new application and service concepts are being developed and demonstrated in an ever-increasing manner. This workshop brings together researchers and practitioners working on humancomputer interaction (HCI) aspects of context-aware mobile technology and communities to present their insights and research on new concepts, interaction design for mobile context-awareness, usability challenges, collaborative context-aware services and applications for supporting communities, and other topics related to HCI with mobile context-aware technology.”
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Sylvester, Axel, Döring, Tanja and Schmidt, Albrecht (2009): Liquids, smoke, and soap bubbles: reflections on materials for ephemeral user interfaces. In: Proceedings of the 4th International Conference on Tangible and Embedded Interaction 2009. pp. 269-270.
“In this paper we inquire material qualities for tangible user interfaces and introduce the term "ephemeral user interface". We present an example user interface that employs fragile soap bubbles for human-computer interaction: the user has to move or blow bubbles over a dark liquid surface in order to interact with a computer system. Our installation uses liquid, smoke, and soap bubbles as unusual and transient materials that demand a very cautious and calm handling, and furthermore elude the complete control of users, as the bubbles inevitably burst after a short while. Thus, the soap bubble interface provokes thoughts about durability, control, and materiality of tangible user interfaces.”
© All rights reserved Sylvester et al. and/or their publisher
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Schmidt, Albrecht, Dey, Anind K., Seder, Thomas and Juhlin, Oskar (eds.) Proceedings of 1st International Conference on Automotive User Interfaces and Interactive Vehicular Applications - AutomotiveUI 2009 21-22 September , 2009, Essen, Germany.
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Kern, Dagmar and Schmidt, Albrecht (2009): Design space for driver-based automotive user interfaces. In: Schmidt, Albrecht, Dey, Anind K., Seder, Thomas and Juhlin, Oskar (eds.) Proceedings of 1st International Conference on Automotive User Interfaces and Interactive Vehicular Applications - AutomotiveUI 2009 21-22 September , 2009, Essen, Germany. pp. 3-10.
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Graf, Stefan, Spiessl, Wolfgang, Schmidt, Albrecht, Winter, Anneke and Rigoll, Gerhard (2008): In-car interaction using search-based user interfaces. In: Proceedings of ACM CHI 2008 Conference on Human Factors in Computing Systems April 5-10, 2008. pp. 1685-1688.
“Increasing functionality, growing media volumes and dynamic data in today's in-vehicle information systems bear new challenges for user interaction design. Traditional hierarchical and menu-based interaction can only provide limited support while new search-based approaches are promising. In this work we assess different search techniques and search-based user interfaces. In particular we compare free search across all data items with categorized search. Our experiments with functional prototypes show that free search is more efficient and easier to use than searching within categories. Tests in a driving simulator show promising results regarding safety and workload. Means for alphanumeric input appear to be essential for an efficient and safe search interaction while driving.”
© All rights reserved Graf et al. and/or ACM Press
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Mahato, Hema, Kern, Dagmar, Holleis, Paul and Schmidt, Albrecht (2008): Implicit personalization of public environments using bluetooth. In: Proceedings of ACM CHI 2008 Conference on Human Factors in Computing Systems April 5-10, 2008. pp. 3093-3098.
“Implicit and remote personalization of public environments is technically easily possible by using Bluetooth technology. We present a concept to allow people to individually influence public content such as songs played in shopping malls, news displayed on big displays, and advertisements shown etc. based on the Bluetooth functionality in their mobile. Users define once their preferences and store them encoded in the Bluetooth friendly name of their mobile phone. We describe the underlining idea, the implementation of the prototype "Bluemusic" as well as the conducted online survey and the initial user trail. The results suggested that the participants are cautious regarding privacy issues but very interested in such implicit interaction possibilities with public environments.”
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Kern, Dagmar, Harding, Michael, Storz, Oliver, Davis, Nigel and Schmidt, Albrecht (2008): Shaping how advertisers see me: user views on implicit and explicit profile capture. In: Proceedings of ACM CHI 2008 Conference on Human Factors in Computing Systems April 5-10, 2008. pp. 3363-3368.
“Public electronic displays are increasingly used for advertising. In a drive to improve the effectiveness of such displays, advertisers and researchers are exploring the creation of systems that show adverts tailored to the context of the display or to the profile of the audience in close proximity to the display. In this paper we explore, through structured interviews with potential users in two European countries, reactions to the ideas of implicit and explicit generation of such profiles and relate these to more general user views on privacy and targeted advertising. The initial results suggest that users are prepared to trade off ease of use against increased levels of control over their data and are therefore more comfortable with an explicit system.”
© All rights reserved Kern et al. and/or ACM Press
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Broll, Gregor, Haarländer, Markus, Paolucci, Massimo, Wagner, Matthias, Rukzio, Enrico and Schmidt, Albrecht (2008): Collect&Drop: A Technique for Multi-Tag Interaction with Real World Objects and Information. In: Aarts, Emile H. L., Crowley, James L., Ruyter, Boris E. R. de, Gerhäuser, Heinz, Pflaum, Alexander, Schmidt, Janina and Wichert, Reiner (eds.) Ambient Intelligence - European Conference - AmI 2008 November 19-22, 2008, Nuremberg, Germany. pp. 175-191.
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Sahami, Alireza, Holleis, Paul, Schmidt, Albrecht and Häkkilä, Jonna (2008): Rich Tactile Output on Mobile Devices. In: Aarts, Emile H. L., Crowley, James L., Ruyter, Boris E. R. de, Gerhäuser, Heinz, Pflaum, Alexander, Schmidt, Janina and Wichert, Reiner (eds.) Ambient Intelligence - European Conference - AmI 2008 November 19-22, 2008, Nuremberg, Germany. pp. 210-221.
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Holleis, Paul, Schmidt, Albrecht, Paasovaara, Susanna, Puikkonen, Arto and Häkkilä, Jonna (2008): Evaluating capacitive touch input on clothes. In: Hofte, G. Henri ter, Mulder, Ingrid and Ruyter, Boris E. R. de (eds.) Proceedings of the 10th Conference on Human-Computer Interaction with Mobile Devices and Services - Mobile HCI 2008 September 2-5, 2008, Amsterdam, the Netherlands. pp. 81-90.
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Schönböck, Johannes, König, Florian, Kotsis, Gabriele, Gruber, Dominik, Zaim, Emre and Schmidt, Albrecht (2008): MirrorBoard - An Interactive Billboard. In: Herczeg, Michael and Kindsmüller, Martin Christof (eds.) Mensch and Computer 2008 7-10 September, 2008, Lübeck, Germany. pp. 217-226.
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Schmidt, Albrecht, Gellersen, Hans-Werner, Hoven, Elise van den, Mazalek, Ali, Holleis, Paul and Villar, Nicolas (eds.) TEI 2008 - Proceedings of the 2nd International Conference on Tangible and Embedded Interaction February 18-20, 2008, Bonn, Germany.
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Hornecker, Eva, Jacob, Robert J. K., Hummels, Caroline, Ullmer, Brygg, Schmidt, Albrecht, Hoven, Elise van den and Mazalek, Ali (2008): TEI goes on: Tangible and Embedded Interaction. In IEEE Pervasive Computing, 7 (2) pp. 91-96.
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Holleis, Paul and Schmidt, Albrecht (2008): MakeIt: Integrate User Interaction Times in the Design Process of Mobile Applications. In: Indulska, Jadwiga, Patterson, Donald J., Rodden, Tom and Ott, Max (eds.) Pervasive 2008 - Pervasive Computing, 6th International Conference May 19-22, 2008, Sydney, Australia. pp. 56-74.
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Hong, Dongpyo, Höllerer, Tobias, Haller, Michael, Takemura, Haruo, Cheok, Adrian David, Kim, Gerard Jounghyun, Billinghurst, Mark, Woo, Woontack, Hornecker, Eva, Jacob, Robert J. K., Hummels, Caroline, Ullmer, Brygg, Schmidt, Albrecht, Hoven, Elise van den and Mazalek, Ali (2008): Advances in Tangible Interaction and Ubiquitous Virtual Reality. In IEEE Pervasive Computing, 7 (2) pp. 90-96.
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Atterer, Richard and Schmidt, Albrecht (2007): Tracking the interaction of users with AJAX applications for usability testing. In: Proceedings of ACM CHI 2007 Conference on Human Factors in Computing Systems 2007. pp. 1347-1350.
“In this paper, we introduce an implementation for detailed monitoring of user actions on web pages. It addresses the problem that the log data recorded by standard web servers is not sufficient for the tracking of users on AJAX websites, e.g. to conduct a usability test. Using standard web technologies, our HTTP proxy can record very detailed usage information, such as mouse movements, clicks, key presses and scrolling, together with the exact HTML DOM tree objects involved. As we show in several case studies, the tracking also works across multiple websites, none of which needs to be under our control. This approach is much less invasive than previous efforts: The test person does not need to install software on her computer, and in certain operation modes, no configuration changes at all are required on her computer. Our research indicates that if the technology described in this paper is employed, arbitrary visitors of a website are more likely to take part in a usability test offered by that site -- this facilitates recruiting test participants over the Internet.”
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Holleis, Paul, Otto, Friederike, Hussmann, Heinrich and Schmidt, Albrecht (2007): Keystroke-level model for advanced mobile phone interaction. In: Proceedings of ACM CHI 2007 Conference on Human Factors in Computing Systems 2007. pp. 1505-1514.
“The design of applications using mobile devices needs a different quality assessment than those known for desktop applications. Of the many aspects that have to be taken into account, one important criterion is the average time users need to complete a task. For interactions with the mouse, keyboard or touch screens, there exist models that predict interaction times like Fitts' law or the Keystroke-Level Model (KLM). This paper shows parallels to these models for advanced interactions with mobile phones targeted at pervasive services, including near field communication as well as built-in cameras and sensors. Applications can be evaluated with respect to user performance time without having a prototype running on the phone. To accomplish that, we extend the known KLM by identifying basic interaction elements for mobile phones and give estimates for expert user performance derived from several user tests.”
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Spiessl, Wolfgang, Villar, Nicolas, Gellersen, Hans-Werner and Schmidt, Albrecht (2007): VoodooFlash: authoring across physical and digital form. In: Proceedings of the 1st International Conference on Tangible and Embedded Interaction 2007. pp. 97-100.
“Design tools that integrate hardware and software components facilitate product design work across aspects of physical form and user interaction, but at the cost of requiring designers to work with other than their accustomed programming tools. In this paper we introduce VoodooFlash, a tool designed to build on the widespread use of Flash while facilitating design work across physical and digital components. VoodooFlash extends the existing practice of authoring interactive applications in terms of arranging components on a virtual stage, and provides a physical stage on which controls can be arranged, linked to software components, and appropriated with other physical design materials.”
© All rights reserved Spiessl et al. and/or ACM Press
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Kranz, Matthias, Schmidt, Albrecht, Maldonado, Alexis, Rusu, Radu Bogdan, Beetz, Michael, Hörnler, Benedikt and Rigoll, Gerhard (2007): Context-aware kitchen utilities. In: Proceedings of the 1st International Conference on Tangible and Embedded Interaction 2007. pp. 213-214.
“We report on approaches for context-awareness in a kitchen environment. Two devices, an augmented cutting board and a sensor-enriched knife, enable the environment to determine the type of food handled during the preparation of meals.”
© All rights reserved Kranz et al. and/or ACM Press
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Rukzio, Enrico, Broll, Gregor, Leichtenstern, Karin and Schmidt, Albrecht (2007): Mobile Interaction with the Real World: An Evaluation and Comparison of Physical Mobile Interaction Techniques. In: Schiele, Bernt, Dey, Anind K., Gellersen, Hans-Werner, Ruyter, Boris E. R. de, Tscheligi, Manfred, Wichert, Reiner, Aarts, Emile H. L. and Buchmann, Alejandro P. (eds.) Ambient Intelligence European Conference - AmI 2007 November 7-10, 2007, Darmstadt, Germany. pp. 1-18.
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Vetter, Johannes, Hamard, John, Paolucci, Massimo, Rukzio, Enrico and Schmidt, Albrecht (2007): Physical mobile interaction with dynamic physical object. In: Cheok, Adrian David and Chittaro, Luca (eds.) Proceedings of the 9th Conference on Human-Computer Interaction with Mobile Devices and Services - Mobile HCI 2007 September 9-12, 2007, Singapore. pp. 339-340.
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Broll, Gregor, Hamard, John, Paolucci, Massimo, Haarländer, Markus, Wagner, Matthias, Siorpaes, Sven, Rukzio, Enrico, Schmidt, Albrecht and Wiesner, Kevin (2007): Mobile interaction with web services through associated real world objects. In: Cheok, Adrian David and Chittaro, Luca (eds.) Proceedings of the 9th Conference on Human-Computer Interaction with Mobile Devices and Services - Mobile HCI 2007 September 9-12, 2007, Singapore. pp. 319-321.
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Drewes, Heiko, Hußmann, Heinrich and Schmidt, Albrecht (2007): Blickgesten als Fernbedienung. In: Gross, Tom (ed.) Mensch and Computer 2007 September 2-5, 2007, Weimar, Germany. pp. 79-88.
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Kern, Dagmar, Schmidt, Albrecht, Pitz, Michael and Bengler, Klaus (2007): Status- und Kontextinformationen für die Telekommunikation im Auto. In: Gross, Tom (ed.) Mensch and Computer 2007 September 2-5, 2007, Weimar, Germany. pp. 119-128.
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Kern, Nicky, Schiele, Bernt and Schmidt, Albrecht (2007): Recognizing context for annotating a live life recording. In Personal and Ubiquitous Computing, 11 (4) pp. 251-263.
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Michahelles, Florian, Thiesse, Frédéric, Schmidt, Albrecht and Williams, John R. (2007): Pervasive RFID and Near Field Communication Technology. In IEEE Pervasive Computing, 6 (3) pp. 94-96.
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Drewes, Heiko, Atterer, Richard and Schmidt, Albrecht (2007): Detailed Monitoring of User's Gaze and Interaction to Improve Future E-Learning. In: Stephanidis, Constantine (ed.) Universal Access in Human-Computer Interaction. Ambient Interaction, 4th International Conference on Universal Access in Human-Computer Interaction, UAHCI 2007 Held as Part of HCI International 2007 Beijing, China, July 22-27, 2007 Proceedings, Part II July 22-27, 2007, Beijing, China. pp. 802-811.
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Atterer, Richard, Schmidt, Albrecht and Wnuk, Monika (2007): A Proxy-Based Infrastructure for Web Application Sharing and Remote Collaboration on Web Pages. In: Baranauskas, Maria Cecília Calani, Palanque, Philippe A., Abascal, Julio and Barbosa, Simone Diniz Junqueira (eds.) DEGAS 2007 - Proceedings of the 1st International Workshop on Design and Evaluation of e-Government Applications and Services September 11th, 2007, Rio de Janeiro, Brazil. pp. 74-87.
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Drewes, Heiko and Schmidt, Albrecht (2007): Interacting with the Computer Using Gaze Gestures. In: Baranauskas, Maria Cecília Calani, Palanque, Philippe A., Abascal, Julio and Barbosa, Simone Diniz Junqueira (eds.) DEGAS 2007 - Proceedings of the 1st International Workshop on Design and Evaluation of e-Government Applications and Services September 11th, 2007, Rio de Janeiro, Brazil. pp. 475-488.
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Schmidt, Albrecht, Terrenghi, Lucia and Holleis, Paul (2007): Methods and guidelines for the design and development of domestic ubiquitous computing applications. In Pervasive and Mobile Computing, 3 (6) pp. 721-738.
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Broll, Gregor, Siorpaes, Sven, Rukzio, Enrico, Paolucci, Massimo, Hamard, John, Wagner, Matthias and Schmidt, Albrecht (2007): Supporting Mobile Service Usage through Physical Mobile Interaction. In: PerCom 2007 - Fifth Annual IEEE International Conference on Pervasive Computing and Communications 19-23 March, 2007, White Plains, New York, USA. pp. 262-271.
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Schmidt, Albrecht and Terrenghi, Lucia (2007): Methods and Guidelines for the Design and Development of Domestic Ubiquitous Computing Applications. In: PerCom 2007 - Fifth Annual IEEE International Conference on Pervasive Computing and Communications 19-23 March, 2007, White Plains, New York, USA. pp. 97-107.
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Wimmer, Raphael, Kranz, Matthias, Boring, Sebastian and Schmidt, Albrecht (2007): A Capacitive Sensing Toolkit for Pervasive Activity Detection and Recognition. In: PerCom 2007 - Fifth Annual IEEE International Conference on Pervasive Computing and Communications 19-23 March, 2007, White Plains, New York, USA. pp. 171-180.
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Kranz, Matthias, Spiessl, Wolfgang and Schmidt, Albrecht (2007): Designing Ubiquitous Computing Systems for Sports Equipment. In: PerCom 2007 - Fifth Annual IEEE International Conference on Pervasive Computing and Communications 19-23 March, 2007, White Plains, New York, USA. pp. 79-86.
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Ullmer, Brygg and Schmidt, Albrecht (eds.) Proceedings of the 1st International Conference on Tangible and Embedded Interaction 2007, Baton Rouge, Louisiana, USA, February 15-17, 2007 2007.
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Rukzio, Enrico, Leichtenstern, Karin, Callaghan, Victor, Holleis, Paul, Schmidt, Albrecht and Chin, Jeannette Shiaw-Yuan (2006): An Experimental Comparison of Physical Mobile Interaction Techniques: Touching, Pointing and Scanning. In: Dourish, Paul and Friday, Adrian (eds.) UbiComp 2006 Ubiquitous Computing - 8th International Conference September 17-21, 2006, Orange County, CA, USA. pp. 87-104.
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Schmidt, Albrecht (2006): Network alarm clock (The 3AD International Design Competition). In Personal and Ubiquitous Computing, 10 (2) pp. 191-192.
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Terrenghi, Lucia, Kranz, Matthias, Holleis, Paul and Schmidt, Albrecht (2006): A cube to learn: a tangible user interface for the design of a learning appliance. In Personal and Ubiquitous Computing, 10 (2) pp. 153-158.
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Schmidt, Albrecht, Spiekermann, Sarah, Gershman, Anatole and Michahelles, Florian (2006): Real-World Challenges of Pervasive Computing. In IEEE Pervasive Computing, 5 (3) pp. 91-93.
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Atterer, Richard, Wnuk, Monika and Schmidt, Albrecht (2006): Knowing the user's every move: user activity tracking for website usability evaluation and implicit interaction. In: Proceedings of the 2006 International Conference on the World Wide Web 2006. pp. 203-212.
“In this paper, we investigate how detailed tracking of user interaction can be monitored using standard web technologies. Our motivation is to enable implicit interaction and to ease usability evaluation of web applications outside the lab. To obtain meaningful statements on how users interact with a web application, the collected information needs to be more detailed and fine-grained than that provided by classical log files. We focus on tasks such as classifying the user with regard to computer usage proficiency or making a detailed assessment of how long it took users to fill in fields of a form. Additionally, it is important in the context of our work that usage tracking should not alter the user's experience and that it should work with existing server and browser setups. We present an implementation for detailed tracking of user actions on web pages. An HTTP proxy modifies HTML pages by adding JavaScript code before delivering them to the client. This JavaScript tracking code collects data about mouse movements, keyboard input and more. We demonstrate the usefulness of our approach in a case study.”
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Rukzio, Enrico, Schmidt, Albrecht and Kruger, Antonio (2005): The rotating compass: a novel interaction technique for mobile navigation. In: Proceedings of ACM CHI 2005 Conference on Human Factors in Computing Systems 2005. pp. 1761-1764.
“In current mobile navigation systems users receive the navigational instructions on a visual display or by descriptive audio. The mapping between the provided navigation information and the surrounding world has still to be performed by the users. In our approach that aims at public spaces, we combine a public display that shows directions with a synchronized output on a personal device. We describe a system where on the public display a compass with a rotating needle is shown. When the compass needle points in the desired direction, the mobile device of the user vibrates. This unobtrusive cue, allows the user to navigate without listening to or looking at the mobile device. In this paper we introduce the concept of synchronized information displays for navigation. We describe our prototype of such a system and report on a user study, that shows the feasibility of the approach.”
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Butz, Andreas, Kray, Christian, Krüger, Antonio, Schmidt, Albrecht and Prendinger, Helmut (eds.) Proceedings of the 2nd Workshop on Multi-User and Ubiquitous User Interfaces MU3I January 9, 2005, San Diego, USA.
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Gellersen, Hans-Werner, Want, Roy and Schmidt, Albrecht (eds.) PERVASIVE 2005 - Pervasive Computing, Third International Conference May 8-13, 2005, Munich, Germany.
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Butz, Andreas, Kruger, Antonio, Kray, Christian and Schmidt, Albrecht (2004): Workshop W5: multi-user and ubiquitous user interfaces (MU3I). In: Nunes, Nuno Jardim and Rich, Charles (eds.) International Conference on Intelligent User Interfaces 2004 January 13-16, 2004, Funchal, Madeira, Portugal. pp. 378-379.
“The workshop on Multi-User and Ubiquitous User Interfaces (MU3I) discusses examples of and principles underlying user interfaces for ubiquitous computing and multi-user interfaces. It raises issues such as interface adaptation, resource limitations, and novel interaction techniques. The workshop is held as a full day event and the papers were reviewed by an international program committee. Online proceedings are available at http://www.mu3i.org/.”
© All rights reserved Butz et al. and/or ACM Press
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Schmidt, Albrecht, Kolbl, Thorsten, Wagner, Siegfried and Strassmeier, Walter (2004): Enabling Access to Computers for People with Poor Reading Skills. In: Proceedings of the 8th ERCIM Workshop on User Interfaces for All 2004. p. 96.
“Access to information and communication using the Internet is still very limited for people with poor reading skills. Current mainstream web-applications such as email or web-shops are designed for people that have good reading skills. In our research we investigated the use of a web based email system by people with poor reading and writing skills. As literacy is not an absolute concept and peoples abilities differ by a great extent. Recent reports suggest that even in developed countries up to a quarter of the population have only elementary reading skills. In our research we investigate how web applications can be designed to be usable by this group of people. In this paper we report an analysis of a password based logon procedure and suggest an alternative. The development method use is based on the idea of participatory design, includes investigations and studies and lasted over about 4 months. In a study we could show that the login time can be significantly reduced for those users using an image based authentication method. Furthermore it showed that this method can be used by the users without help. For our experience with working with users we suggest general design guidelines for building UIs for people with a low level of literacy.”
© All rights reserved Schmidt et al. and/or Springer Verlag
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Schmidt, Albrecht, Gross, Tom and Billinghurst, Mark (2004): Introduction to Special Issue on Context-Aware Computing in CSCW. In Computer Supported Cooperative Work, 13 (3) pp. 221-222.
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Holmquist, Lars Erik, Schmidt, Albrecht and Ullmer, Brygg (2004): Tangible interfaces in perspective. In Personal and Ubiquitous Computing, 8 (5) pp. 291-293.
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Block, Florian, Schmidt, Albrecht, Villar, Nicolas and Gellersen, Hans-Werner (2004): Towards a Playful User Interface for Home Entertainment Systems. In: Markopoulos, Panos, Eggen, Berry, Aarts, Emile H. L. and Crowley, James L. (eds.) EUSAI 2004 - Ambient Intelligence - Second European Symposium November 8-11, 2004, Eindhoven, The Netherlands. pp. 207-217.
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Holmquist, Lars Erik, Gellersen, Hans-Werner, Kortuem, Gerd, Schmidt, Albrecht, Strohbach, Martin, Antifakos, Stavros, Michahelles, Florian, Schiele, Bernt, Beigl, Michael and Maze, Ramia (2004): Building Intelligent Environments with Smart-Its. In IEEE Computer Graphics and Applications, 24 (1) pp. 56-64.
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Laerhoven, Kristof van, Villar, Nicolas, Schmidt, Albrecht, Kortuem, Gerd and Gellersen, Hans-Werner (2003): Using an autonomous cube for basic navigation and input. In: Oviatt, Sharon L., Darrell, Trevor, Maybury, Mark T. and Wahlster, Wolfgang (eds.) Proceedings of the 5th International Conference on Multimodal Interfaces - ICMI 2003 November 5-7, 2003, Vancouver, British Columbia, Canada. pp. 203-210.
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Dey, Anind K., Schmidt, Albrecht and McCarthy, Joseph F. (eds.) UbiComp 2003 Ubiquitous Computing - 5th International Conference October 12-15, 2003, Seattle, WA, USA.
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Kern, Nicky, Schiele, Bernt and Schmidt, Albrecht (2003): Multi-sensor Activity Context Detection for Wearable Computing. In: Aarts, Emile H. L., Collier, René, Loenen, Evert van and Ruyter, Boris E. R. de (eds.) EUSAI 2003 - Ambient Intelligence - First European Symposium November 3-4, 2003, Veldhoven, The Netherlands. pp. 220-232.
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Laerhoven, Kristof van, Villar, Nicolas, Schmidt, Albrecht, Kortuem, Gerd and Gellersen, Hans-Werner (2003): Using an autonomous cube for basic navigation and input. In: Proceedings of the 2003 International Conference on Multimodal Interfaces 2003. pp. 203-210.
“This paper presents a low-cost and practical approach to achieve basic input using a tactile cube-shaped object, augmented with a set of sensors, processor, batteries and wireless communication. The algorithm we propose combines a finite state machine model incorporating prior knowledge about the symmetrical structure of the cube, with maximum likelihood estimation using multivariate Gaussians. The claim that the presented solution is cheap, fast and requires few resources, is demonstrated by implementation in a small-sized, microcontroller-driven hardware configuration with inexpensive sensors. We conclude with a few prototyped applications that aim at characterizing how the familiar and elementary shape of the cube allows it to be used as an interaction device.”
© All rights reserved Laerhoven et al. and/or their publisher
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Michahelles, Florian, Matter, Peter, Schmidt, Albrecht and Schiele, Bernt (2003): Applying wearable sensors to avalanche rescue. In Computers & Graphics, 27 (6) pp. 839-847.
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Villar, Nicolas, Schmidt, Albrecht, Kortuem, Gerd and Gellersen, Hans-Werner (2003): Interacting with proactive public displays. In Computers & Graphics, 27 (6) pp. 849-857.
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Schmidt, Albrecht, Strohbach, Martin, Laerhoven, Kristof van and Gellersen, Hans-Werner (2002): Ubiquitous Interaction -- Using Surfaces in Everyday Environments as Pointing Devices. In: Carbonell, Noelle and Stephanidis, Constantine (eds.) Proceedings of the 7th ERCIM Workshop on User Interfaces for All October 23-25, 2002, Paris, France. pp. 263-279.
“To augment everyday environments as interface to computing may lead to more accessible and inclusive user interfaces, exploiting affordances existing in the physical world for interaction with digital functionality. A major challenge for such interfaces is to preserve accustomed uses while providing unobtrusive access to new services. In this paper we discuss augmentation of common surfaces such as tables as generic pointing device. The basic concept is to sense the load, the load changes and the patterns of change observed on a surface using embedded load sensors. We describe the interaction model used to derive pointing actions from basic sensor observations, and detail the technical augmentation of two ordinary tables that we used for our experiments. The technology effectively emulates a serial mouse, and our implementation and use experience prove that it is unobtrusive, robust, and both intuitively and reliably usable.”
© All rights reserved Schmidt et al. and/or Springer Verlag
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Laerhoven, Kristof van, Schmidt, Albrecht and Gellersen, Hans-Werner (2002): Pin&Play: Networking Objects through Pins. In: Borriello, Gaetano and Holmquist, Lars Erik (eds.) UbiComp 2002 Ubiquitous Computing - 4th International Conference September 29 - October 1, 2002, Göteborg, Sweden. pp. 219-228.
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Schmidt, Albrecht, Strohbach, Martin, Laerhoven, Kristof van, Friday, Adrian and Gellersen, Hans-Werner (2002): Context Acquisition Based on Load Sensing. In: Borriello, Gaetano and Holmquist, Lars Erik (eds.) UbiComp 2002 Ubiquitous Computing - 4th International Conference September 29 - October 1, 2002, Göteborg, Sweden. pp. 333-350.
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Gellersen, Hans-Werner, Richtsteiger, Dirk, Schmidt, Albrecht and Schulz, Karsten (2001): Paper-to-Web: Papier als Eingabemedium für Formulare im World-Wide Web. In: Oberquelle, Horst, Oppermann, Reinhard and Krause, Jürgen (eds.) Mensch and Computer 2001 March 5-8, 2001, Bad Honnef, Germany. .
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Schmidt, Albrecht, Gross, Tom and Frick, Oliver (2001): WAP - Interaktionsdesign und Benutzbarkeit. In: Oberquelle, Horst, Oppermann, Reinhard and Krause, Jürgen (eds.) Mensch and Computer 2001 March 5-8, 2001, Bad Honnef, Germany. .
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Dey, Anind K., Kortuem, Gerd, Morse, David R. and Schmidt, Albrecht (2001): editoral: Situated Interaction and Context-Aware Computing. In Personal and Ubiquitous Computing, 5 (1) pp. 1-3.
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Schmidt, Albrecht and Gellersen, Hans-Werner (2001): Visitor awareness in the web. In: Proceedings of the 2001 International Conference on the World Wide Web 2001. pp. 745-753.
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Schmidt, Albrecht, Stuhr, Tanjev and Gellersen, Hans-Werner (2001): Context-Phonebook - Extending Mobile Phone Applications with Context. In: 3rd Mobile Human-Computer Interaction Workshop 2001. .
“Today people use mobile phones to make calls and to receive calls anytime and anywhere. This gives the user a lot of freedom but also introduces that the phone can interrupt the user always and everywhere. In our work we implemented a phonebook that contains additionally to the phone number also context information, such as details on the users connection status, availability preferences, or location.”
© All rights reserved Schmidt et al. and/or their publisher
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Schmidt, Albrecht (2000): Implicit Human Computer Interaction Through Context. In Personal and Ubiquitous Computing, 4 (2) .
“
In this paper the term implicit human computer
interaction is defined. It is discussed how the
availability of processing power and advanced
sensing technology can enable a shift in HCI
from explicit interaction, such as direct
manipulation GUIs, towards a more implicit
interaction based on situational context. In the
paper an algorithm that is based on a number of
questions to identify applications that can
facilitate implicit interaction is given. An XMLbased language to describe implicit HCI is
proposed. The language uses contextual variables
that can be grouped using different types of
semantics as well as actions that are called by
triggers. The term of perception is discussed and
four basic approaches are identified that are
useful when building context-aware applications.
Providing two examples, a wearable context
awareness component and a sensor-board, it is
shown how sensor-based perception can be
implemented. It is also discussed how situational
context can be exploited to improve input and
output of mobile devices.”
© All rights reserved Schmidt and/or Springer
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Schmidt, Albrecht, Takaluoma, Antti and Mäntyjärvi, Jani (2000): Context-Aware Telephony Over WAP. In Personal and Ubiquitous Computing, 4 (4) pp. 225-229.
“In this paper we introduce a novel approach to sharing context in order to enhance the social quality of remote mobile communication. We provide an analysis of how people start a conversation in situations where they meet physically, especially looking at the influence of the situation. This is then compared to the way remote communication is initiated using mobile phones. The lack of knowledge about the situation at the other end leads to the initiation of calls which are not appropriate to that situation. The solution we propose is to exchange context information before initiating the call. We implemented this concept using the Wireless Application Protocol (WAP). The application Context-Call offers a phone interface that provides information about the receiver when setting up a call. Based on that information, the caller can then decide to place the call, to leave a message or to cancel the call. Privacy issues that arise from this technology are discussed also.”
© All rights reserved Schmidt et al. and/or Springer
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Schmidt, Albrecht, Aidoo, Kofi Asante, Takaluoma, Antti, Tuomela, Urpo, Laerhoven, Kristof van and Velde, Walter van de (1999): Advanced Interaction in Context. In: Gellersen, Hans-Werner (ed.) Handheld and Ubiquitous Computing - First International Symposium - HUC99 September 27-29, 1999, Karlsruhe, Germany. pp. 89-101.
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Schmidt, Albrecht, Gellersen, Hans-Werner and Beigl, Michael (1999): Matching Information and Ambient Media. In Personal and Ubiquitous Computing, 3 (4) .
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Gaedke, Martin, Gellersen, Hans-Werner, Schmidt, Albrecht, Stegemüller, Ulf and Kurr, Wolfgang (1999): Object-oriented Web Engineering for Large-scale Web Service Management. In: HICSS 1999 1999. .
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Schmidt, Albrecht, Beigl, Michael and Gellersen, Hans-Werner (1999): There is more to context than location. In Computers & Graphics, 23 (6) pp. 893-901.
“Context is a key issue in interaction between human and computer, describing the surrounding facts that
add meaning. In mobile computing research published the parameter location is most often used to
approximate context and to implement context-aware applications. We propose that ultra-mobile
computing, characterized by devices that are operational and operated while on the move (e.g. PDAs,
mobile phones, wearable computers), can significantly benefit from a wider notion of context. To structure
the field we introduce a working model for context, discuss mechanisms to acquire context beyond
location, and application of context-awareness in ultra-mobile computing. We investigate the utility of
sensors for context-awareness and present two prototypical implementations - a light sensitive display and
an orientation aware PDA interface. The concept is then extended to a model for sensor fusion to enable
more sophisticated context recognition. Based on an implementation of the model an experiment is
described and the feasibility of the approach is demonstrated. Further we explore fusion of sensors for
acquisition of information on more sophisticated contexts”
© All rights reserved Schmidt et al. and/or Elsevier
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Beigl, Michael, Schmidt, Albrecht, Lauff, Markus and Gellersen, Hans-Werner (1998): The UbicompBrowser. In: Stephanidis, Constantine and Waern, Annika (eds.) Proceedings of the 4th ERCIM Workshop on User Interfaces for All October 19-21, 1998, Stockholm, Sweden. p. 12.
“In this paper we introduce the UbicompBrowser, a system that applies ubiquitous computing to the World-Wide Web. The UbicompBrowser extends the World-Wide Web in two ways into our everyday environments. First, it extends the browser concept by replacing the standard web user interface with a handheld access and control device and surrounding output devices. This ubiquitous user interface is determined dynamically based on the location of the handheld control. Secondly, the UbicompBrowser system extends the web concept of uniform access to resources by applying the same access method, uniform resource identifiers, to environment-specific resources, for example for access to the TV channels available on a TV set, and for access to light switches. In summary, the UbicompBrowser improves web accessibility by realizing a ubiquitous environment-based user interface, and by extending accessibility to environment-specific resources. The approach constitutes a user interface for all flexibly adapted to their environment, interfacing both global resources in the web and local resources in a given user environment.”
© All rights reserved Beigl et al. and/or The European Research Consortium for Informatics and Mathematics - ERCIM
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