Abstract:

Sample collection and the establishment of the template are crucial for keystroke dynamic identity authentication systems. So far, the single template systems cannot decrease the false reject/accept rate(FRR/FAR) into the reasonable range. The multitemplate method is introduced into the keystroke authentication, and then a new multitemplate selection algorithm is proposed to balance the FRR and FAR after the most/least authentication probability algorithm is presented. Experiments are done to compare the proposed algorithm with the GMMS, and the factors that can influence the authentication results are analyzed. At last, the advantage of multitemplate system is also shown, compared with the singletemplate authentication systems.

Key words: biometric authentication;keystroke dynamic identity authentication;multitemplate selection