Date of Original Version

2007

Type

Conference Proceeding

Rights Management

http://portal.acm.org/citation.cfm?id=1280680.1280689

Abstract or Table of Contents

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.

Comments

Technical Report CMU-CyLab-06-016

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