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Utilizing Sequences of Touch Gestures for User Verification on Mobile Devices

  • Liron Ben KimonEmail author
  • Yisroel MirskyEmail author
  • Lior RokachEmail author
  • Bracha ShapiraEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10939)

Abstract

Smartphones have become ubiquitous in our daily lives; they are used for a wide range of tasks and store increasing amounts of personal data. To minimize risk and prevent misuse of this data by unauthorized users, access must be restricted to verified users. Current classification-based methods for gesture-based user verification only consider single gestures, and not sequences. In this paper, we present a method which utilizes information from sequences of touchscreen gestures, and the context in which the gestures were made using only basic touch features. To evaluate our approach, we built an application which records all the necessary data from the device (touch and contextual sensors which do not consume significant battery life). Using XGBoost on the collected data, we were able to classify between a legitimate user and the population of illegitimate users (imposters) with an average equal error rate (EER) of 4.78% and an average area under the curve (AUC) of 98.15%. Our method demonstrates that by considering only basic touch features and utilizing sequences of gestures, as opposed to individual gestures, the accuracy of the verification process improves significantly.

Keywords

Continuous user verification Mobile Security Touchscreen gestures Sequence recognition Context Behavioral models XGBoost 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Software and Information Systems EngineeringBen-Gurion University of the NegevBeer ShevaIsrael

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