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.
How does it work?
Your PasswordCard has a unique grid of random letters and digits on it. The rows have different colors, and the columns different symbols. All you do is remember a combination of a symbol and a color, and then read the letters and digits from there. It couldn't be simpler!
You can optionally include an area that has only digits which you can use for PIN's, and you can also choose to include symbols if you use sites which require your passwords to include them. Remember that you can still use the digits-only area for regular passwords, for any site which allows numbers in its passwords!
Generate and print you own personal PasswordCard here - http://www.passwordcard.org/en .