Assentication: User Deauthentication and Lunchtime Attack Mitigation with Seated Posture Biometric [ACNS '18]

Assentication is a new hybrid biometric based on a human user’s seated posture pattern. It captures a unique combination of physiological and behavioral traits.

In this project, we describe a low-cost fully functioning prototype that involves an office chair instrumented with 16 tiny pressure sensors. We also explore (via user experiments including 30 subjects) how this new biometric can be used in a typical workplace to provide continuous authentication (and de-authenication) of users. Assentication achieves 94.2% accuracy for identification and 100% accuracy for continuous authentication.