Why iPhoneX Face ID can be more secure than fingerprinting

Apple's iPhone X has been released for some time, with the biggest change in the past except the full screen, there are Face ID instead of fingerprint recognition.Although previously Samsung and other vendors also have facial recognition, but most of them are a photo 'easily beat' Apple claims that their Face ID is more secure than fingerprinting, and that their face recognition is based on 'structured light' and 'deep camera' technologies. What exactly is structured light and what is depth camera? Apple's Face ID Why can provide higher security? The secrets are in iPhone X 'bangs'.

Face ID's work mainly depends on the phone processor and these five components, Flood illuminator, Proximity sensor, Ambient light sensor, Dot projector, Infrared camera. Pick up the phone to unlock only a moment, but behind the complex hardware and software needed.

First of all, the most basic judgment is that when the proximity sensor senses an object within the effective distance range, the floodlight illuminator is started first to emit ordinary infrared light, which is received by the infrared camera and transmitted to the handpiece processor Preliminary judgments, when the judgment result is a face, you need more accurate facial information.

To collect more accurate facial information, then the need for the introduction of structured light. The so-called structured light, is processed through a special graphics of the light, as the sun shines through the blinds on the object, will form varying degrees of distortion. Point projector will be about 30,000 encoded 'structured light' infrared point projection to the human face, infrared lens receives these distorted graphics, through the different degree of distortion, you can calculate the distance information for accurate people Face depth information.

Finally, the accurate facial information back to the phone processor, and the encrypted stored in the safety compartment in the spectral data to compare the face, you can determine whether the whole face recognition process are carried out in the infrared, So this is why the low light environment has little effect on the accuracy and speed of Face ID recognition.

Of course, many mobile phones have joined the face recognition feature, and iPhone X is different, some mobile phone face recognition is only the face of planar feature points are compared, so only with a photo or other fake information can easily Fooled, even if the domestic Vivo X20, equipped with DualPixel with 3D depth of field recognition of the front camera, is still limited in recognition efficiency and accuracy, can not be the same as Face ID scan the same 30,000 points in the actual The use of security is still not as good as the iPhone X.

And more manufacturers in the field of face recognition has just started, Xiaomi and OPPO will and Wonderful Optoelectronics, Qualcomm, Sunlight Optoelectronics to develop 3D sensing solutions, Huawei is also working with Sunny Optical Technology, for its high-end machine development related Of the 3D sensor solutions and not to mention the actual effect of these companies as soon as the second quarter of next year to mass production of face recognition programs, and users have to spend more on these phones may have to wait for more Time, so that Face ID currently face the Android camp in the field of face recognition at least a year.

In fact, iPhone X is based on the depth of structured light technology camera technology is not new in science and technology, Apple is not entirely by their own efforts to complete Face ID in the past seven years, Apple has acquired a number of in 3D sensing Technology, Structured Light Solutions, 3D Scanning and Apple's advancements in 3D scanning, depth photography and more, especially after the acquisition of PrimeSense by Israeli companies in 2013. PrimeSense, which was established in 2005, has structured light technology that produces Related sensors and chips, designated by Microsoft as partners for the Natal project in 2010, were involved in the design of the Kinect as opposed to the PS3 Move's need for a handle at the time, Kinect needed no accessories and was able to interact only by recognizing body movements, It's also based on structured-light depth camera technology, and Kinect is now discontinued with the termination of PrimeSense and Microsoft.

Microsoft Kinect technology has long been there, but the iPhone X to use it on the phone, can be described as unprecedented initiatives to ensure that the recognition accuracy, speed under the premise of such a large number of sensors, launchers will be concentrated in such a narrow Space, Apple's industrial design strength is evident.Compared to the first generation of Kinect size, iPhone X's 'bangs' area is almost negligible.And Apple's own research and development of the A11 neural network chip to ensure the speed of the alignment of 30,000 infrared points and Accuracy has also played a crucial role.It can be said that the entire Face ID system, sophisticated, efficient and low energy consumption once again proved Apple's leading position in science and technology.

Of course, Face ID is not perfect.Apple claims Face ID error rate of only 1 millionth, than the fingerprint to unlock the error rate of 50,000, the accuracy rate increased 20 times, but the foreign media test There are already cases of identical ID twins flirting with Face ID.

More notably, various biometrics, including fingerprints, faces, and irises, still have inherent defects that they can not overcome. Regardless of how accuracy improves, once they are compromised, the result is irreversible, Change the password compared to, you sure you want to change face to change eyes?