You know the thing when you have purchased something online and you have to pass through the additional security checks. This should of course be distinctly different from your other 20,000 passwords, pin numbers, favourite film / colour / 1st school / mothers maiden name etc.
So you get to the screen and it asks you to randomly choose the 2nd, 4th and 7th characters, or the 1st, 3rd and 6th etc .
You can guarantee that every time though I will have to work this out using my fingers to ensure that the correct sequence is entered. The finger abacus is never used except in such situations but I feel such a plum sitting in front of a puter screen counting on my little pinkies