Have you...

...ever written a note to yourself on the back of your hand?

A Japanese company has come up with an electronic display that can be laminated to the back of your hand. It only lasts a few days and the likely near-future application is for health monitoring. But how about putting a screen on your hand for a con?

Or temporary animated tattoos?

There's all sorts of interesting ideas here. One question, though? Will you still be able to shower while "wearing" it...