Recognition Based Graphical Password Algorithms: A Survey

Abstract

User Authentication is an important aspect of information security. Alphanumeric passwords are the most common and widely adopted means of user authentication. Nevertheless, there are several disadvantages attached to the alphanumeric forms of authentication for example, user choose passwords that are easy to guess (dates of births, their names, car plate number) in other to remember them, because difficult passwords are not easily remembered; this brought about the alternative of graphical passwords, research have been carried out to proof that humans find it easier to recall images. This paper reviews 10 recognition based graphical passwords algorithm; common usability and security threats of these systems where analyzed. This paper also suggests future research directions