Some of us have even made do with variations on the "Old School Tabula recta": http://lifehacker.com/5715794/how-to-write-down-and-encrypt-your-passwords-with-a

Some of us have even made do with variations on the "Old School Tabula recta": http://lifehacker.com/5715794/how-to-write-down-and-encrypt-your-passwords-with-an-old-school-tabula-recta http://lifehacker.com/5715794/how-to-write-down-and-encrypt-... "If I'm logging into Amazon I'll find the intersection of column M and row A (the second and third letters of Amazon) and then read off diagonally 16 characters."