GRID-IMAGE PASSWORD BASED SCHEME: ENHANCING MEMORABILITY FEATURES OF PASSWORDS

Password authentication has become a widely recognized element of computer security practices where human users are proven or confirmed as legitimate u sers for access to secure systems. Using this syste m, every user needs to recall its password correctly b efore access can be granted to an intended services or applications. Remembering the secure passwords is a n everyday problem for users because of individual memory limitation. In an effort to solve this probl em, graphical password was presented as one promising athentication alternative taking advantage of pictu re superiority over texts. The main objective of th is study is to provide a comprehensive survey of array of gr aphical password schemes in different categories ba sed on their common features with the primary aim of id entifying the memorability features and propose a n ew graphical authentication system with enhanced memorability features.