"If you prick it, does it bleed? Not really, but it'll definitely feel the sting. While advances in science and special effects have resulted in prosthetic limbs and latex masks that look realistic, there's always been the problem of simulating the sensitivity of skin. Well it looks like that little problem has just been solved, thanks to Ali Javey from University of California. The electrical engineering and computer science professor has developed a method for creating nanowire electronics that has as much sensors as you have nerve endings."