Marc Hassenzahl explains the fascinating concept of User Experience and Experience Design. Commentaries by Don Norman, Eric Reiss, Mark Blythe, and Whitney Hess
User Experience and Experience Design !
Just, Mike and Aspinall, David (2009): Personal choice and challenge questions: a security and usability assessment. In: Proceedings of the 2009 Symposium on Usable Privacy and Security 2009. p. 8. Available online