The identification process is mainly completed by these three modules: infrared lens, reflective sensor and dot matrix projector.
The principle seems simple, that is, scanning 30,000 dot patterns on the surface of our face, but it is impossible to fool the iPhoneX with photos.
The Iphone can do more than that. A 1 1 Bionic processors can learn continuously. Just like the people around you, it will also record your small changes every day, such as you slowly grow a beard, for example, you start wearing glasses and hats and so on. It will not affect the facial recognition of the iPhone.
Face ID data, including the mathematical representation of your face, is securely encrypted and can only be used in a secure compartment. This data will remain on your device forever, and will never be sent to Apple, nor will it be included in the device backup.
Neural networks may be updated from time to time. In order to avoid the need for users to re-register Face ID after the neural network is updated, iPhone X can use the automatically updated neural network to process the stored registered images. In addition to being encrypted and protected by secure partitions, these registered images will be cut according to your face to minimize background information.
Face ID will save the facial images collected during the normal unlocking operation, and discard these images immediately after the calculated mathematical representation is compared with the registered Face ID data.
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It is worth noting that once you shave off your long beard, iPhoneX will ask you to enter your password once, and then you will get to know you again. Like I said at the beginning, face? ID is more like a security guard hidden in a mobile phone. He can get to know you, communicate with you and gradually adapt to your changes. Photos can't fool him, but he may mistake twins or not recognize you in a mask.
Generally speaking, Apple completely removed fingerprint recognition and bet on face recognition on iPhoneX? ID is really bold, but at present, the performance of iPhoneX facial recognition is acceptable.
Although compared with the mature second-generation fingerprint recognition, face? ID has no advantage in speed, but it is more natural to use. What about face? ID is an innovation, not a small compromise in the full-screen era, but Apple has made this compromise the top of software and hardware optimization.