Graphical password: Shoulder-surfing resistant using falsification

Graphical password is an alternative authentication mechanism in order to access to the system. As a matter of fact, it is more secure than the textual passwords, but it is vulnerable to shoulder-surfing attack. In this paper, we propose a new method which is resistant to shoulder-surfing attack by using a false image in authentication step. As a result, it will be a complex task for a hacker to capture and misuse the password, due to the usage of false image.