3DPIN: Enhancing security with 3D display

Passwords and PINs are convenient and ubiquitous, yet they are quite vulnerable to attackers who stand near the user. This problem may be partially resolved by changing the user interface, but previous solutions of this kind still give shoulder-surfing attackers a significant advantage over brute-force search. We propose a novel solution based on 3D, especially suitable for glasses-free 3D displays found in many smartphones and handheld game consoles. A user at the “3D spot” may log in easily, while nearby shoulder-surfers gain no advantage. We perform a detailed experimental analysis of the usability of our scheme.