You probably wouldn't bat an eyelash if you see a self-destructing computer chip in a Mission Impossible movie, but what if one actually exists in real life? Xerox PARC engineers have developed a chip that can explode into teensy little pieces as part of DARPA's Vanishing Programmable Resources project. To make that possible, they used Gorilla Glass instead of plastic and metal. Yes, it's the same tough glass used on many available smartphones, but the engineers told IDG News Service's Martyn Williams that they "ion-exchange temper[ed] it to build in stress." A piece of glass that's heavily stressed will easily shatter and disintegrate when triggered.