Secure pattern-based authentication against shoulder surfing attack in smart devices

Today, although the password authentication is used widely, since users write their password directly on screen and tend to make their password easy to remember, they may be vulnerable to several attacks such as brute-force, guessing, replay, and shoulder surfing. Although many authentication schemes were proposed to improve the usability and security, they are sill vulnerable to the shoulder surfing attack. In this paper, we propose a novel pattern-based authentication scheme which is secure against this attack. Also, we analyze the usability, deployability, and security of the proposed authentication scheme, compared to the other authentication schemes in smart devices.