Graphical User Authentication in Mobile Device using the web RGB color palette

Existing graphical authentication methods take into account the fact that users are more capable of remembering pictures instead of text. Graphical authentication schemes are expected to be less vulnerable to specific hacker attack techniques that have greatly improved in recent years. The usability aspect of a graphical authentication product refers to the extent that a product can be used by users to achieve goals with effectiveness, efficiency and satisfaction in a specified context of use. This paper describes a prototype system providing graphical authentication of mobile devices over the Internet, covering both usability and security aspects. Color images are assigned to the mobile users and authentication is achieved by modifying the Red-Green Blue (RGB) color intensity values of the assigned image.

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