A second look at the usability of click-based graphical passwords

Sonia Chiasson, Robert Biddle, P. C. van Oorschot
2007 Proceedings of the 3rd symposium on Usable privacy and security - SOUPS '07  
Click-based graphical passwords have been proposed as a usable alternative to text passwords. We conducted two user studies: an initial lab study to revisit these usability claims, explore for the first time the impact on usability of a wide-range of images, and gather information about the points selected by users; and a largescale field study that examined how click-based graphical passwords work in practice. No such prior field studies have been reported in the literature. We found
more » ... t differences in the usability results of the two studies, providing empirical evidence that relying solely on lab studies for security interfaces can be problematic. We also present a first look at whether interference from having multiple graphical passwords affects usability and whether more memorable passwords are necessarily weaker from a security point of view.
doi:10.1145/1280680.1280682 dblp:conf/soups/ChiassonBO07 fatcat:dertfjgdp5hbnfwuryeiimu5tq