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Lessons Learned from the Deployment of a Smartphone-Based Access-Control System

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journal contribution
posted on 01.01.2007 by Lujo Bauer, Lorrie F Cranor, Michael K Reiter, Kami Vaniea
Grey is a smartphone-based system by which a user can exercise her authority to gain access to rooms in our university building, and by which she can delegate that authority to other users.We present findings from a trial of Grey, with emphasis on how common usability principles manifest themselves in a smartphone-based security application. In particular, we demonstrate aspects of the system that gave rise to failures, misunderstandings, misperceptions, and unintended uses; network effects and new flexibility enabled by Grey; and the implications of these for user behavior.We argue that the manner in which usability principles emerged in the context of Grey can inform the design of other such applications.

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01/01/2007

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