Graphical Password to Avoid Shoulder Surfing

The focused of this report is on Graphical password system & how can contribute to handle security problems that threaten authentication processes. Once such threat is shoulder surfing attacks which are also reviewed in this project. Computer security depends largely on passwords to authenticate the human user’s from attackers. The most common computer authentication method is to use alphanumerical usernames & passwords. However there are significant drawbacks of this method. For example passwords selected by user’s are easily guessed by attackers. On the other hand passwords which are difficult to remember. To overcome the problems of low security. Authentication method are developed by researchers that we used barcode image as password & also we avoid shoulder surfing using this method. In this paper we conduct a comprehensive survey of the existing graphical password techniques & provide a possible theory of our own.