Confounding Factors in Keystroke Dynamics

Authentication is the verification of the identity of a person to access a resource or perform an activity. Authentication based on keystroke dynamics biometrics validates a legitimate user, comparing his typing on keyboard with his stored template. An important group of factors influences the capture of the raw data generated by the user’s typing. These Confounding Factors have been addressed in the literature from different approaches, and most of these studies agree that their influence affects the reliability of Keystroke Dynamics. In this research, a taxonomy of Confounding Factors is proposed, and several mitigation actions are discussed to face them.