Journal of Theoretical and Applied Information Technology
Authentication is possible in several ways namely textual, graphical, bio-metric, 3D password and third party authentication. In this paper, the authentication system is presented by introducing the multi-level authentication technique which generates the password in multiple levels to access the services. The details of proposed multilevel authentication techniques are presented along with data flows, algorithms. In today's scenario, graphical password is the alternative in network security to replace text-based password in which users interact with images for authentication rather than input alphanumeric strings.