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Demonstrates interpolation enhances verification accuracy in rhythmic force input, suggesting better user authentication methods.
This study proposes an interpolation method based on ascending/descending segment partitioning to perform same-user verification using pressure time series (Rhythmic Force) collected from Force Touch–enabled smartphones. By inserting samples using the mean of each segment’s endpoints, the method preserves waveform structure while normalizing sequence length. In One-Class SVM experiments, interpolation alone yielded limited performance gains; however, when combined with feature extraction, the proposed interpolation achieved the highest accuracy.
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Hwangbo et al. (2026) studied this question.
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