How Face ID Works On iPhone X
Apple's new smartphone, iPhone X, uses a recognition system called 'Face ID' to unlock the device and authorize payments. How does it check your identity is authentic? "It compares two face images and determines how similar they are," says Professor Anil Jain, who studies pattern recognition and computer vision at Michigan State University. "In the simplest way, that's what face recognition does. You enroll your face, just like in Touch ID you enroll your fingerprint." Image capture Face ID uses a combination of light projectors and sensors to take several images of your facial features. Collectively called the 'TrueDepth camera system', Apple says these technologies work together to build a 'detailed depth map of your face to recognize you in an instant.' To set up Face ID, you follow the on-screen instructions, which involve moving your head in a circle so a camera can take multiple shots of your face for a ...