22 citations · 29 across the 4 of their papers we have counts for
4 papers
Quantifying the Security of Recognition Passwords: Gestures and Signatures
Can Liu, Shridatt Sugrim, Gradeigh D. Clark +1
Gesture and signature passwords are two-dimensional figures created by drawing on the surface of a touchscreen with one or more fingers. Prior results about their security have use…
Of Two Minds, Multiple Addresses, and One History: Characterizing Opinions, Knowledge, and Perceptions of Bitcoin Across Groups
Xianyi Gao, Gradeigh D. Clark, Janne Lindqvist
Digital currencies represent a new method for exchange and investment that differs strongly from any other fiat money seen throughout history. A digital currency makes it possible…
Engineering Gesture-Based Authentication Systems
Gradeigh D. Clark, Janne Lindqvist
Gestures are a topic of increasing interest in authentication and successful implementation as a security layer requires reliable gesture recognition. So far much work focuses on n…
User-Generated Free-Form Gestures for Authentication: Security and Memorability
Michael Sherman, Gradeigh Clark, Yulong Yang +5
This paper studies the security and memorability of free-form multitouch gestures for mobile authentication. Towards this end, we collected a dataset with a generate-test-retest pa…