A comprehensive study of the usability of multiple graphical passwords

Chowdhury, Soumyadeb; Poet, Ron and Mackenzie, Lewis (2013). A comprehensive study of the usability of multiple graphical passwords. IN: Human-Computer Interaction – INTERACT 2013. Kotzé, Paula; Marsden, Gary and et al, (eds) Lecture Notes in Computer Science . Springer.


Recognition-based graphical authentication systems (RBGSs) using images as passwords have been proposed as one potential solution to the need for more usable authentication. The rapid increase in the technologies requiring user authentication has increased the number of passwords that users have to remember. But nearly all prior work with RBGSs has studied the usability of a single password. In this paper, we present the first published comparison of the usability of multiple graphical passwords with four different image types: Mikon, doodle, art and everyday objects (food, buildings, sports etc.). A longitudinal experiment was performed with 100 participants over a period of 8 weeks, to examine the usability performance of each of the image types. The results of the study demonstrate that object images are most usable in the sense of being more memorable and less time-consuming to employ, Mikon images are close behind but doodle and art images are significantly inferior. The results of our study complement cognitive literature on the picture superiority effect, visual search process and nameability of visually complex images.

Publication DOI: https://doi.org/10.1007/978-3-642-40477-1_26
Divisions: Aston Business School
Event Title: 4th IFIP TC 13 International Conference on Human-Computer Interaction
Event Type: Other
Event Dates: 2013-09-02 - 2013-09-06
Uncontrolled Keywords: usability,user authentication,multiple image passwords
Published Date: 2013


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