Graphical Passwords

In this paper we review the graphical passwords. First, we compare text-based and graphical passwords, and assess their level of safety somehow. . Entering a text-based password is somewhat difficult for the use. We will compare some mechanisms of password, means the text-based and graphical password. Also a number of graphical passwords will be reviewed and introduced ,and we will have a comparison between them. We will try to present the best model of graphical password among the various models and techniques with regard of performance, ease of use and committing to memory, safety and other parameters to choose a useful method