Ian Pearson, futurologist for BTexact, says that recent developments in polymer displays and electronics mean that within 7 years it may be possible to put electronics onto and into our skin.

Semiconductor circuits can already be printed using inkjet printers, so it could be feasible in the future to have circuits painlessly printed onto hands or arms.

"Active skin technology could be used by the medical profession to monitor our blood chemistry 24/7 and enable hospitals to check up on patients via computers or mobiles. These computers could also remotely control drug dispensers. It might even be possible to print special membranes with pores that can be electronically opened and closed and thereby dispense accurate dosages."

Read more about Active Skin at the BTexact site.