Keystroke Dynamics for Individual Identification in Japanese Free Text Typing
Toshiharu Samura, H. Nishimura · SICE Journal of Control Measurement and System Integration · 2011
We develop Web-based typing software in order to collect keystroke data on a LAN, and investigate several characteristics of keystroke dynamics in Japanese free text typing. We perform experiments on 112 subjects, representing three groups according to the number of letters they could type within five minutes. In this experiment, we extract the feature indices from the keystroke timing for each single letter and for two-letter combinations composed of consonant and vowel pairs in Japanese text. Based on an identification method using a weighted Euclidean distance, personal identification for the three groups is evaluated and its high performance is confirmed in proportion to the typing level of the group.