Date Added: Apr 2013
A password is a secret word or combination of alphabets used for user authentication to establish self identity. This password should be kept secret from those not allowed to access. Now-a-days data security is the most describing problem. Token based authentication like Smart card, Biometric based authentication like iris, fingerprint, facial, Knowledge based authentication like text based and Image based password. Graphical password are more secure than the text password because they are easy to remember and hard to crack.