Shoulder-surfing Resistant Graphical Password System

Graphical passwords consist of selecting images or drawing symbols rather than entering textual characters. They can be considered as an alternative to overcome the problems that arise from the text-based passwords system. It has been suggested that graphical passwords are harder to guess or to be broken by brute force attack. Also, the dictionary attacks are difficult. After a comprehensive study on various graphical password schemes, we propose a design to minimize the search time to find the pass-images on a login screen. The scheme proposed is currently under implementation and will be tested for usability and security verification.