A new mobile biometric based upon usage context

Securing mobile devices present unique challenges and there is considerable interest in identification of new biometric modalities for active authentication of mobile users. Naïve extension of desktop and other fixed asset biometric modalities to mobile environment is limiting because (a) mobile use provides a richer usage context including location and motion which should be exploited, and (b) biometrics like mouse and eye movement don't simply extend to the mobile usage. We present a new mobile biometric that combines behavioral elements corresponding to what, where, when, and how of the mobile device usage. We propose a representation scheme and a classification model for the new biometric. We also outline an active authentication framework and a test and evaluation approach for using the new biometric.

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