Toan Van Nguyen, Napa Sae-Bae, and Nasir Memon
This paper presents Draw-A-PIN, a user authentication system on a device with a touch interface that supports the use of PINs. In the proposed system, the user is asked to draw her PIN on the touch screen instead of typing it on a keypad. Consequently, Draw-A-PIN could offer better security by utilizing drawing traits or behavioral biometrics as an additional authentication factor beyond just the secrecy of the PIN. In addition, Draw-A-PIN inherently provides acceptability and usability by leveraging user familiarity with PINs.