Influences of Human Cognition and Visual Behavior on Password Strength during Picture Password Composition
[c223] Katsini, C., Fidas, C. A., Raptis, G. E., Belk, M., Samaras, G., & Avouris, N. M. (2018, April). Influences of Human Cognition and Visual Behavior on Password Strength during Picture Password Composition. In Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems (CHI '18). Article 87. Pages 87:1-87:14. ACM, New York, NY, USA.
DOI: 10.1145/3172944.3172996


Visual attention, search, processing and comprehension are important cognitive tasks during a graphical password composition activity. Aiming to shed light on whether individual differences on visual behavior affect the strength of the created passwords, we conducted an eye-tracking study (N=36), and adopted an accredited cognitive style theory to interpret the results. The analysis revealed that users with different cognitive styles followed different patterns of visual behavior which affected the strength of the created passwords. Motivated, by the results of the first study, we introduced adaptive characteristics to the user authentication mechanism, aiming to assist specific cognitive style user groups to create more secure passwords, and conducted a second study with a new sample (N=40) to test the adaptive characteristics. Results strengthen our assumptions that adaptive mechanisms based on users' differences in cognitive and visual behavior uncover a new perspective for improving the password's strength within graphical user authentication realms.


Computer-supported collaborative learning has been an active area of research since the beginning for the HCI group more>>

Web usability team of the HCI Group has been active in studying human-web interaction and ways to support the design of accessible, findable, usable and aesthetically appealing web sites. more>>

Mobile Technology Unit of the HCI Group has been studying design and evaluation of mobile applicationss more>>

Hci Group | Electrical and Computer Engineering | University of Patras