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ACSAC
2010
IEEE

Exploring usability effects of increasing security in click-based graphical passwords

8 years 10 months ago
Exploring usability effects of increasing security in click-based graphical passwords
Graphical passwords have been proposed to address known problems with traditional text passwords. For example, memorable user-chosen text passwords are predictable, but random system-assigned passwords are difficult to remember. We explore the usability effects of modifying system parameters to increase the security of a click-based graphical password system. Generally, usability tests for graphical passwords have used configurations resulting in password spaces smaller than that of common text passwords. Our two-part lab study compares the effects of varying the number of click-points and the image size, including when different configurations provide comparable password spaces. For equivalent spaces, no usability advantage was evident between more click-points, or a larger image. This is contrary to our expectation that larger image size (with fewer clickpoints) might offer usability advantages over more clickpoints (with correspondingly smaller images). The results suggest promisin...
Elizabeth Stobert, Alain Forget, Sonia Chiasson, P
Added 10 Feb 2011
Updated 10 Feb 2011
Type Journal
Year 2010
Where ACSAC
Authors Elizabeth Stobert, Alain Forget, Sonia Chiasson, Paul C. van Oorschot, Robert Biddle
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