Using personal photos as pictorial passwords
CHI '05 Extended Abstracts on Human Factors in Computing Systems
Design and evaluation of a shoulder-surfing resistant graphical password scheme
Proceedings of the working conference on Advanced visual interfaces
SOUPS '06 Proceedings of the second symposium on Usable privacy and security
A large-scale study of web password habits
Proceedings of the 16th international conference on World Wide Web
Securing passfaces for description
Proceedings of the 4th symposium on Usable privacy and security
VIP: a visual approach to user authentication
Proceedings of the Working Conference on Advanced Visual Interfaces
A closer look at recognition-based graphical passwords on mobile devices
Proceedings of the Sixth Symposium on Usable Privacy and Security
Can users remember their pictorial passwords six years later
CHI '11 Extended Abstracts on Human Factors in Computing Systems
On automated image choice for secure and usable graphical passwords
Proceedings of the 28th Annual Computer Security Applications Conference
Exploring the design space of graphical passwords on smartphones
Proceedings of the Ninth Symposium on Usable Privacy and Security
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In this paper we propose Tiles, a graphical authentication system in which users are assigned a target image and subsequently asked to select segments of that image. We assess the extent to which this system provides protection against two security threats: observation attacks and sharing of authentication credentials in two laboratory-based studies. We note some of the vulnerabilities of the new system but provide evidence that automated manipulation of the similarity of the decoy images can help mitigate the threat from verbal sharing and observation attacks.