A new kind of password

http://clam.rutgers.edu/~lsobrado/graphicalpassword/
GraphicalPassword requires the .NET Framework 1.1. It's experimental, but an interesting concept. Your password is made up of specific icons. Many icons are presented and the idea is to find yours and click somewhere inside the perimeter created by extending imaginary lines out from your icons.

A corresponding article:
http://rutgersscholar.rutgers.edu/volume04/sobrbirg/sobrbirg.htm