Draw your password; more secure

Sometimes I have recommended using a pattern on a keypad as a password because it may be easier to remember and numerically more random and secure. But this is even better...

in the wake of growing concerns about traditional ‘weak’ passwords created from words and numbers, Newcastle University computer scientists have been developing alternative software which lets the user draw a picture password, known as a ‘graphical password’.
“Many people find it difficult to remember a password so choose words that are easy to remember and therefore more susceptible to hackers,” explained computer scientist Jeff Yan, a lecturer at Newcastle University.

And did you notice it's a British university not for from home?
Oh, and in case you're worried that it would have to be an exact replication:

if a person chooses a flower background and then draws a butterfly as their secret password image onto it, they have to remember where they began on the grid and the order of their pen strokes. It is recognised as identical if the encoding is the same, not the drawing itself, which allows for some margin of error as the drawing does not have to be re-created exactly.

So perhaps ATMs will end up with you drawing on their touch screen rather than entering a four-digit PIN.
Password Protection With Easy To Remember Drawings