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  1. Proceedings of the 4th symposium on Usable privacy and security (SOUPS '08)
  2. Securing passfaces for description
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Improving text passwords through persuasion
Use Your Illusion: secure authentication usable anywhere
Evaluating assistance of natural language policy authoring
A user study of off-the-record messaging
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Usability of CAPTCHAs or usability issues in CAPTCHA design
Expressions of expertness: the virtuous circle of natural language for access control policy specification
The challenges of using an intrusion detection system: is it worth the effort?
Securing passfaces for description
Universal device pairing using an auxiliary device
Evaluating the usability of usage controls in electronic collaboration
Analyzing websites for user-visible security design flaws

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Securing passfaces for description

Content Provider ACM Digital Library
Author Dunphy, Paul Nicholson, James Olivier, Patrick
Abstract One common practice in relation to alphanumeric passwords is to write them down or share them with a trusted friend or colleague. Graphical password schemes often claim the advantage that they are significantly more secure with respect to both verbal disclosure and writing down. We investigated the reality of this claim in relation to the Passfaces graphical password scheme. By collecting a corpus of naturalistic descriptions of a set of 45 faces, we explored participants' ability to associate descriptions with faces across three conditions in which the decoy faces were selected: (1) at random; (2) on the basis of their visual similarity to the target face; and (3) on the basis of the similarity of the verbal descriptions of the decoy faces to the target face. Participants were found to perform significantly worse when presented with visual and verbally grouped decoys, suggesting that Passfaces can be further secured for description. Subtle differences in both the nature of male and female descriptions, and male and female performance were also observed.
Starting Page 24
Ending Page 35
Page Count 12
File Format PDF
ISBN 9781605582764
DOI 10.1145/1408664.1408668
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2008-07-23
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Description Graphical passwords Passfaces
Content Type Text
Resource Type Article
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