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ReferencesNavigation arrowAuthorsNavigation arrowGraham Johnson
May 23

“ Knowledge is commonly socially constructed, through collaborative efforts towards shared objectives or by dialogues and challenges brought about by different persons' perspectives. ”

-- G. Salomon (in "Distributed Cognitions: Psychological and Educational Considerations")

 
 

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Graham Johnson

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Publications by Graham Johnson (bibliography)

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2010
 
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Robertson, Paul, Szymkowiak, Andrea and Johnson, Graham (2010): Investigating the future of self-service technology. In: Proceedings of the HCI10 Conference on People and Computers XXIV 2010. pp. 346-349.

“In this paper we describe an ongoing research project between NCR Dundee and Abertay University to investigate the future of self-service technology for entertainment. The aim was to assess how future technologies may be utilized in building a new system or improving current approaches to content distribution. We designed a web-based survey to determine the likelihood with which users would interact with future services. The findings suggested a strong preference for internet based technologies and the implications for further usage technologies are discussed.”

© All rights reserved Robertson et al. and/or BCS

2007
 
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Aziz, Maryam, Riley, Chris and Johnson, Graham (2007): Usability Challenges in Emerging Markets. In: Cordeiro, José and Filipe, Joaquim (eds.) ICEIS 2008 - Proceedings of the Tenth International Conference on Enterprise Information Systems Volume HCI June 12-16, 2007, Barcelona, Spain. pp. 160-165.

2005
 
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Angeli, Antonella De, Coventry, Lynne, Johnson, Graham and Renaud, Karen (2005): Is a picture really worth a thousand words? Exploring the feasibility of graphical authentication systems. In International Journal of Human-Computer Studies, 63 (1) pp. 128-152.

“The weakness of knowledge-based authentication systems, such as passwords and Personal Identification Numbers (PINs), is well known, and reflects an uneasy compromise between security and human memory constraints. Research has been undertaken for some years now into the feasibility of graphical authentication mechanisms in the hope that these will provide a more secure and memorable alternative. The graphical approach substitutes the exact recall of alphanumeric codes with the recognition of previously learnt pictures, a skill at which humans are remarkably proficient. So far, little attention has been devoted to usability, and initial research has failed to conclusively establish significant memory improvement. This paper reports two user studies comparing several implementations of the graphical approach with PINs. Results demonstrate that pictures can be a solution to some problems relating to traditional knowledge-based authentication but that they are not a simple panacea, since a poor design can eliminate the picture superiority effect in memory. The paper concludes by discussing the potential of the graphical approach and providing guidelines for developers contemplating using these mechanisms.”

© All rights reserved Angeli et al. and/or Academic Press

 
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03 Apr 2012: Added
12 Feb 2010: Modified
25 Aug 2009: Added
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27 Jun 2007: Added

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URL: http://www.interaction-design.org/references/authors/graham_johnson.html
May 23

“ Knowledge is commonly socially constructed, through collaborative efforts towards shared objectives or by dialogues and challenges brought about by different persons' perspectives. ”

-- G. Salomon (in "Distributed Cognitions: Psychological and Educational Considerations")

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

Help us help you!

 
 
 
 
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