Diceware

I watched a little bit of the first episode of the new Numbers TV show. In it, the mathematician demonstrated that when we think we are picking things at random, we still will use a discernable pattern. The Diceware Passphrase Home Page provides a system where dice are rolled to generate a random passphrase which should be much more secure than anything that we try to make up ourselves. This slashdot article talks about the need to use passphrases rather than passwords in order to have better security.