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Keystroke Dynamics Authentication: A Survey of Free-text Methods

Current computer systems depend greatly on authentication methods in order to provide sufficient protection to the data handled by these systems. Rather than using the common username and password scheme which suffers from many security and usability limitations, we investigate in this paper the use of keystroke dynamics as a more useable authentication alternative. We focus on the research done on free-text keystroke systems and its ability to provide continual identity verification during the whole time that the user is using the system.