This is old, but might be interesting to fellow security geeks. The idea here is to challenge concepts of what a password is and how it should be secure. In essence, using this system will allow you to keep your uber-secret in a public place such as twitter. There’s some other crufty code (firefox plugin) to go with this, but it’s really just for fun.

http://foofus.net/~omi/tipas/

http://twitter.com/tipas/