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Lessons Learned from the Deployment of a Smartphone-Based Access-Control System
Institute for Software Research
  • Lujo Bauer, Carnegie Mellon University
  • Lorrie F Cranor, Carnegie Mellon University
  • Michael K Reiter, Carnegie Mellon University
  • Kami Vaniea, Carnegie Mellon University
Date of Original Version
Conference Proceeding
Rights Management
Abstract or Description
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.
Technical Report CMU-CyLab-06-016
Citation Information
Lujo Bauer, Lorrie F Cranor, Michael K Reiter and Kami Vaniea. "Lessons Learned from the Deployment of a Smartphone-Based Access-Control System" (2007)
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