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Even your mobile phone is powerful enough to process video in real-time to track objects. Facial recognition is also widely used in casinos to determine if patrons are problem gamblers, or nuisance professional players. Facebook is using Facial Recognition to identify you in photos on your friends pages. The same image-stitching technology is already being used to used to assemble fragments of images in medicine. It is essentially a camera up your backside to visually check for a variety of medical conditions. Google's self-driving car has some issues, but it has some practical uses.