Abstract: Graphical authentication is widely used everywhere these days. Graphical authentication schemes are broadly categorized as recognition based, recall based and cued-recall techniques. All the techniques which comes under these categories are discussed in this paper. In this paper an improved pass matrix scheme is proposed and analysis is done by 50 random users and it is found that proposed scheme provides a secure and more convenient way of graphical authentication.
Keywords: Graphical Authentication, cued-recall techniques, proposed scheme, Déjà vu, Passfaces.