Having secure passwords is must, but remembering those cryptic passwords is a big problem. Many of us rely on either using a password manager or writing down the password(s) on a piece of paper for keeping them always with you - the latter being not a very good idea. The answer to this problem is "PasswordCard" - a credit card-sized password cheat-sheet which you keep in your wallet, allowing you to pick very secure passwords without having to remember them. All your passwords will be with you but nobody can read them, with your unique PasswordCard number you can even re-print another if the original gets stolen or missing.