CES, the annual high tech gadget extravaganza in Las Vegas, again delivers its wave of new inventions and cutting edge technology with artificial intelligence this year's unavoidable buzzword. Mirror, mirror on the wall......who's the healthiest of them all? "This actually started out of the University of Toronto when they were researching lie detection in children," she said. Intended to be used in a doctor's waiting room or pharmacies, the mirror is expected to cost about $70,000. With a connector placed on the forearm, it can, for example, be used to grasp an object with the hand.