To reduce the size of the bottom bezel on 2017's , the Touch ID fingerprint scanner was removed and replaced by the Face ID secure facial recognition system. Using structured lighting, a pattern is overlayed on a subject using infrared projectors and cameras note where the pattern is distorted. This depth information allows the TrueDepth Camera to create a 3D map of the user's face in order to verify his or her identity.
The last Apple iPhone models to feature Touch ID were the and . Since then, the 2018 and 2019 iPhones have all featured Face ID even though there ...
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