Continuous User Authentication Using Keystroke Dynamics

Behavioural biometric is related to what a person does, or how the person uses the body. Keystroke dynamics (or typing rhythms) is an innovative behavioural biometric technique, refers to a user’s habitual typing characteristics. These typing characteristics are believed to be unique among large populations. Keystroke dynamics allows for the design of more robust authentication systems than traditional password. Keystroke dynamics involves three phases namely enrollment phase, verification phase and identification phase. The enrollment phase allows the user to register independently. The verification phase matches the probe sequence with the already stored template in the gallery. The identification phase makes the accessed user as an authenticated user only if the template matches with the reference template otherwise the user gets exit. The user will be accessed only if keystroke timing is matched with the reference templates stored in the database. Accessed user will become the authenticated user.