a 'programmable dermal display' in which a population of about 3 billion 'display pixel robots' are permanently implanted a fraction of a millimeter under the surface of the skin, covering a rectangle 6cm x 5cm on the back of the hand. photons emitted by these pixel bots produce an image on the surface of the skin. this pixel bot array could be programmed to form any real-time information-driven display. amazingly, 'data visualization' suddenly turns into a whole new meaning if the entire human body can be considered as a living information display made up of data-driven tattoos. [nanogirl.com|via medgadget.com]