So it has become widely known that there are is a pattern of circles that is present on many modern banknotes. Many photocopier manufacturers (including Xerox) and many software packages (including Photoshop) include code to prevent processing of images that include these patterns.

So, in theory, if I can make a t-shirt that includes this pattern then nobody will be able to print a picture of me while I'm wearing it. The pattern's fairly simple. It's cleverly concealed in UK, Euro and US currency as zeros, musical noes, stars and as an abstract pattern. It shouldn't be too hard to sneak into a t-shirt, and then nobody can print pictures of you. At least that's the theory...