After the release of iPhone X, many people have doubts about the security of Face ID , because not to mention the same twins, many long-lost relatives have a chance to unlock their iPhone X. So how will Apple solve this problem? A patent exposed today gives Apple's idea: scan the veins of the face! Can two people always grow exactly the same vein?
The US Patent and Trademark Office yesterday unveiled a patent from Apple that uses pulsed radiation to detect vein imaging. The document shows that the patent was filed on November 12, 2015. Apple said that the principle of infrared detection can be used to obtain images of venous blood vessels under the skin and then use it as biometrics, so that the safety and accuracy of identification will be Will become unbeatable.
The system consists of an infrared emitter that emits multiple infrared pulses, such as the hand or face, into an area of ​​the user's body, which then penetrates the skin and is reflected by the user's veins, and then the other The receiver that senses the IR light is able to accept the reflected light and then depict the user's vein image. And because the technology uses the principle of infrared reflection, it can also rely on the flight time of the light to depict the 3D information of the user's body, one stone and two birds.
Apple said that this system has two major advantages: First, the vein exists inside the body, and there is no second identical vein in the world, so 100% cannot be copied. In contrast, Face ID's 3D person Face recognition still has a millionth false positive rate, and there is also the possibility of cracking; secondly, infrared detection is non-contact, which is more hygienic than fingerprints.
In fact, vein detection has been applied in fingerprint recognition. At that time, manufacturers called it "living fingerprint". Apple also said that this technology has been very mature. However, the author believes that the previous vein detection is mostly "contact detection", and if you want to combine with Face ID, you can make a question mark for non-contact detection that is so far away.
But I have to admit that this is a promising direction, because the TrueDepth camera array used by Face ID actually has infrared emitters and receivers. If Apple wants to add vein detection, there is actually room for adjustment. The only difference is that the TrueDepth system uses "3D structured light", and the light flight time scheme described above is "ToF principle". If Apple really wants this feature to land, there is still a lot of work to be done.
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