Smartphones with Face ID
Face scanner (Face ID)
— the presence of a special face recognition technology in the smartphone.We emphasize that in this case we are talking not just about identifying a person from a photograph, but about full-fledged scanning of facial features and building a 3D model. This allows you to determine many individual features and achieve maximum accuracy. There is evidence that such identification is even more reliable than a fingerprint scanner; besides, it is able to consider the change in the hairstyle of facial hair, the presence of glasses, makeup, etc. even kids' faces which still have relatively few individual features.
As for the practical side, the most popular way to use this feature is to authenticate a user when unlocking a smartphone, logging into an account, authorizing payments, etc. However, the matter is not limited to this — other, more unique use cases are also possible. For example, in some applications, the face scanner reads the user's facial expressions, and then this facial expression is repeated by a smiley on the phone screen.
Also note that initially "Face ID" is the name of Apple's proprietary technology. However, nowadays, this name is often used colloquially as a common noun — to refer to similar features in all smartphones, not just Apple ones.
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