TITLE:
Keyboard Dependency of Personal Identification Performance by Keystroke Dynamics in Free Text Typing
AUTHORS:
Yoshitomo Matsubara, Toshiharu Samura, Haruhiko Nishimura
KEYWORDS:
Keystroke Dynamics, Biometrics, Information Security, Keyboard Dependency
JOURNAL NAME:
Journal of Information Security,
Vol.6 No.3,
July
14,
2015
ABSTRACT: We have proposed some methods
for feature extraction and identification that enable identification of
individuals through long-text input as an important topic in keystroke dynamics
research. As to the robustness in practical circumstances, there exists a
question on the keystroke dynamics how much the recognition accuracy is
influenced by the change of keyboard. By comparing the performance in the cases
of using the same keyboard and different keyboards, the dependencies on
keyboards are evaluated through three implemented experiments for subjects. As
a result, it is found that we do not need to worry about the keyboard
difference for users whose typing skills reach high level with about 900 or
more letters in 5 minutes, and only for the remaining users it would be
necessary to register their profile data with respect to each keyboard they use
in order to avoid recognition accuracy degradation.