ABSTRACT
Authenticating a user online, without compromising the user comfort is an important issue. The most popular approach to authenticate a user online is Password-based authentication. Studies show that, users (always) choose very simple passwords which are often easy to guess. On the contrary, randomly generated strings are difficult to remember, especially if the user is having many passwords. With technological advancement, alternative authentication schemes are reported in literature, which are more secure than the conventional Password-based scheme using Biometrics and Keys. Each mechanism has its own advantages and disadvantages. One of the main reasons why password is still widely used is that newer technologies entail significant changes in the infrastructure of the system. These kinds of changes in infrastructure may not be feasible in many cases. In this paper I present a dynamic pass plot scheme (DPPS) based on a pattern or graphical picture rather than the usual pass word with weak strength. Here dynamic means both
1. The display and selection of characters from a 7x7 matrix called plot changes every time when login and
2. The strength and degree of security changes dynamically depending on the application without affecting the user sophistication.
Keywords: Pass plot, Plot, Matrix, Dynamic, Biometrics.
