Improved Visual Preference Authentication

Abstract

We describe a preference-based authentication scheme in which both security and usability of previous approaches are dramatically improved upon. We report on experimental findings supporting a false negative rate on the order (For precise estimates of error rates, large-scale testing is necessary.) of 0.9 % and a false positive rate on the order of 0.5 % for a choice of parameters that result in a registration time of 100 s and an authentication time of 40 s.