The International Journal of Innovative Research in Computer and Communication Engineering
Now-a-days, user authentication is an important topic in the field of information security. To enforce security of information, passwords were introduced. Text based password is a popular authentication method used from ancient times. However, text based passwords are prone to various attacks such as dictionary attacks, guessing attacks, brute force attacks, social engineering attacks etc. Numerous graphical password schemes have been proposed so far as it improves password usability and security. In this paper, the authors conduct a comprehensive survey of the existing graphical password techniques.