Pixels
As has been said, you only have to change a pixel or two. So just put a dot of colour on a random bit of your face every day, or if you are really Machiavellian, the same place every day except the day you rob the bank. The ultimate irony is that we all probably blame crime on 'pimply faced youths' - who are the very people with natural organic anti-face recognition technology.
Biting the hand that feeds IT
