Chapter Nine. Graphical Passwords

Fabian Monrose and Michael K. Reiter

A GRAPHICAL PASSWORD IS A SECRET THAT A HUMAN USER INPUTS TO A COMPUTER WITH THE AID OF the computer's graphical input (e.g., mouse, stylus, or touch screen) and output devices. In this chapter, we review the arguments supporting graphical passwords as being potentially superior to text passwords, present several graphical password designs, and discuss some analyses of graphical password memorability and security.