ITSME: Multi-modal and Unobtrusive Behavioural User Authentication for Smartphones
Authors: Attaullah Buriro, Bruno Crispo, Filippo Del Frari, Jeffrey Klardie, Konrad Wrona

Date: December 2015
Publication: 9th International Conference on Passwords (Passwords15 London). Lecture Notes in Computer Science, Volume 9551
Page(s): 45 - 61
Publisher: Springer
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Abstract or Summary:
In this paper, we propose a new multi-modal behavioural biometric that uses features collected while the user slide-unlocks the smartphone to answer a call. In particular, we use the slide swipe, the arm movement in bringing the phone close to the ear and voice recognition to implement our behaviour biometric. We implemented the method on a real phone and we present a controlled user study among 26 participants in multiple scenario’s to evaluate our prototype. We show that for each tested modality the Bayesian network classifier outperforms other classifiers (Random Forest algorithm and Sequential Minimal Optimization). The multimodal system using slide and pickup features improved the unimodal result by a factor two, with a FAR of 11.01% and a FRR of 4.12%. The final HTER was 7.57%. Note: Video of presentation:

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