Here's the advanced version, that let you use different, mostly uncorrelated passwords for different services. http://blog.jgc.org/2010/12/write-your-passwords-

Here's the advanced version, that let you use different, mostly uncorrelated passwords for different services. http://blog.jgc.org/2010/12/write-your-passwords-down.html http://blog.jgc.org/2010/12/write-your-passwords-down.html I have implemented a little program to generate such a square: http://loup-vaillant.fr/projects/password-generator http://loup-vaillant.fr/projects/password-generator Though by now, I find this a little tedious. I'm thinking of using an encrypted password database, protected with a diceware generated password. That way I will be able to copy&paste my passwords instead of typing them by hand.