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Jason Snell for Tom's Guide
November 4, 2017 9:56 PM PT
The banner feature of the iPhone X is Face ID. Powered by an array of tiny sensing hardware tucked into the “notch” at the top of the iPhone X screen, Face ID paints your face with invisible, infrared light and scans it with an infrared sensor to determine if you are the person who is allowed to unlock this particular phone.