Tri-Pass: A new graphical user authentication scheme

User authentication is one of the most significant issues in computer and information security. Currently, the most prevalent and well-established authentication approach is based on the use of alphanumeric passwords. The first text-based authentication scheme was introduced in the late 1960s, and so far the most computer systems, networks and applications use this technique to authenticate their users. With the growth of users and services, this approach became susceptible to several vulnerabilities and drawbacks. In contrast to text-based passwords, graphical authentication mechanisms promise greater security, memorability and usability. In this paper, we propose and evaluate a new graphical password scheme called Tri-Pass with the purpose of improving the user authentication in both security and usability. © 2014, North Atlantic University Union. All right resurved.