A graphical password against spyware and shoulder-surfing attacks

Users may have various login ids that will be hard to remember their passwords and alphanumeric passwords are difficult to remember. One solution is to use graphical passwords that are more secure. Some threats of Internet security are spyware and shoulder-surfing attacks. This paper presents a new scheme for graphical password that uses images that are unexplainable and have larger password space. The proposed scheme is also resistant to spyware and shoulder-surfing attacks.