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Touch-Stroke Dynamics Authentication Using Temporal Regression Forest
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DOI：10.1109/LSP.2019.2916420.png)
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Abstract
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Touch-stroke dynamics is a relatively recent behavioral biometrics. It authenticates an individual by observing his behavior when swiping a stroke on a smartphone or tablet. Several studies have attempted to determine the optimum authentication accuracy of classifiers, but none of them has used time series or temporal machine learning techniques. We postulate that when a user performs a series of touch strokes in a continuous manner, it can be perceived as a temporal behavior characteristic of the person. In this letter, we propose the use of a temporal regression forest to unearth this hidden but vital temporal information. By incorporating this temporal information in the authentication process, the proposed model is able to achieve average equal error rates of similar to 4.0% and similar to 2.5% on the Serwadda dataset and Frank dataset, respectively.
Keywords:
Touch-stroke dynamics
authentication
biometrics
temporal sequences
random regression forest
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