Effects of variations in arm shaking actions and attention levels on the time-dependent accuracy of personal authentication

抄録

In this study, we investigated how differences in arm shaking actions and user attentiveness influence the degradation of personal authentication accuracy over time. Our previous research has shown that variations in arm shaking actions lead to differences in authentication accuracy after a one-month period. These findings suggest that the naturalness of the arm shaking action may be associated with the ability to sustain authentication performance over time. To further explore this relationship, we investigated the effects of both action style and user attentiveness on long-term authentication accuracy. The results indicate that arm shaking actions performed with the smartphone screen oriented perpendicular to the ground achieved low FRR and FAR performance, even during video viewing and after a one-month interval. This suggests that such shaking actions are not consciously controlled but instead are natural movements, and are therefore effective in maintaining high authentication performance over extended periods.