Abstract
Information security is the rapidly rising area of concern in today's world of network technology. Traditionally, secure access to information is guarded by combination of username and password. The idea of graphical password as an alternative to text based approach was proposed by Blonder in 1996 motivated by the fact called as “picture superiority effect” i.e. tendency of human brain to memorize images far better than text. In this paper, we have proposed a new secure graphical password technique of authentication, which conceals information about the user's password without sacrificing the usability. The technique exploits indirect entry of password image by creating a delusion to select nearby neighbor which makes it difficult for a shoulder-surfer to identify the user's actual password. The simulation result and user study proved that the scheme is easier to use, faster, secure, reliable and can be easily adopted in various security applications like ATMs, mobile phones etc. without requiring any additional hardware.
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