Article : Information Security Using Graphical Passwords

Title

Information Security Using Graphical Passwords

Author

Dr. Ch. Rupa, Krishna Suresh B.V.N.V

Access to computer systems is most often based on the use of alphanumeric passwords. However, users have difficulty remembering a password that is long and random appearing. Instead, they create short, simple, and insecure passwords. Graphical passwords have been designed to try to make passwords more memorable and easier for people to use and therefore, more secure. Using a graphical password, users click on images rather than type alphanumeric characters. We have designed a new and more secure graphical password system called PassPoints. In this paper we describe the PassPoints system, its security characteristics, and the empirical study we carried p=out comparing PassPoints to alphanumeric passwords. In the empirical study participants learned either an alphanumeric or graphical password and subsequently carried out three longitudinal trails to input their passwords over a period. The result show that the graphical group took longer and made more errors in learning the password, but that the difference was largely a consequence of just a few graphical participants who had difficulty learning to use graphical passwords. In the longitudinal trails the two groups performed similarly on memory of their password, but the graphical group took more time to input a password.

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