Become a cyborg with this...
"Duoskin" temporary tattoo made from gold leaf(often used in picture frames), chocolate and vodka created by Researchers at MIT and Microsoft can double as a user interface for your phone and other mobile devices. Circuits embedded into the gold leaf sends users on their way to becoming cyborgs. The smart tattoos can store data(output display),the input device tattoos can turn skin in to adjust music, lights up based on your body temperature and emotions. Users can also read data off their skin with the communication device tattoos.