Graphical User Authentication Techniques for Security: a Comparative Study

Nowadays, user authentication is one of the important topics in information security. Strong te xt-based password schemes could provide with certain degree of security. However, the fact that strong passwords are difficult to memorize often leads their owners to write them down o n papers or even save them in a computer file. Graphical Use r Authentication (GUA) has been proposed as a possible alternative solution to text-based authentication, motivated particularly by the fact that humans can remember i mages better than text. In recent years, many networks, co mputer systems and Internet based environments try used gr aphical authentication technique for their user’s authentic ation. All of graphical passwords have two different aspects which a re usability and security. Different techniques for GU A have been proposed in literature over the past few years such asRecognition Based Technique[2], Recall Based Techniqu e[2]. This paper presents a survey of comparative study b etween different techniques of GUA. KeywordGraphical User Authentication, Recognition Base d Techniques, Recall Based Techniques.