Visible to the public An Evaluation of One-Class and Two-Class Classification Algorithms for Keystroke Dynamics Authentication on Mobile Devices

TitleAn Evaluation of One-Class and Two-Class Classification Algorithms for Keystroke Dynamics Authentication on Mobile Devices
Publication TypeConference Paper
Year of Publication2015
AuthorsAntal, M., Szabó, L. Z.
Conference Name2015 20th International Conference on Control Systems and Computer Science
KeywordsAndroid (operating system), Android devices, authentication, authentication test-framework, authorisation, biometrics, biometrics (access control), EER, equal error rate, Error analysis, feature extraction, Keyboards, keystroke dynamics, keystroke dynamics authentication, mobile authentication, mobile computing, mobile devices, Mobile handsets, one-class classification, one-class classification algorithms, pattern classification, pubcrawl170115, touch screen based devices, touch sensitive screens, touchscreen, Training, two-class classification algorithms
Abstract

In this paper we study keystroke dynamics as an authentication mechanism for touch screen based devices. The authentication process decides whether the identity of a given person is accepted or rejected. This can be easily implemented by using a two-class classifier which operates with the help of positive samples (belonging to the authentic person) and negative ones. However, collecting negative samples is not always a viable option. In such cases a one-class classification algorithm can be used to characterize the target class and distinguish it from the outliers. We implemented an authentication test-framework that is capable of working with both one-class and two-class classification algorithms. The framework was evaluated on our dataset containing keystroke samples from 42 users, collected from touch screen-based Android devices. Experimental results yield an Equal Error Rate (EER) of 3% (two-class) and 7% (one-class) respectively.

DOI10.1109/CSCS.2015.16
Citation Keyantal_evaluation_2015