Why our selfie can not pass through face recognition door lock?

[Biopsy: Your face is not a piece of paper]

Last time it was mentioned that 3D structured light must pass the dual verification of "living detection +3D contour matching" in Face Recognition Door Lock, I believe many friends will have doubts, and now the secret agent movies, many times they will use 3D printing a rubber head cover to imitate other people's faces, then this is not also possible through face recognition lock? At the same time, many friends asked: "Is the living test just a wink? Why can't the photo pass the face scan door lock system?" Let's break it up and explain it.

1. In-vivo testing is not makes you do a wink or memes.

When you stand in front of the face recognition smart door, the electronic door lock is actually silently doing three things:

1: Infrared spectrum analysis: scanning the skin with 940nm invisible light (the reflected light waves of the paper/screen are completely different from the real person).

2: Dynamic micro-expression capture: Even if you are still, the micro-tremor of the facial capillaries and the natural tremor of the eye (more than 30 times per second) will be captured by the sensor.

3: Blood flow verification: Determine whether the skin is real or a silicone mask by the difference in infrared reflection of the subcutaneous tissue.

2. Why is the photo/video revealing under keyless entry door lock?

• Paper photos: Infrared light is specular (like glass), while real skin is diffuse.

• Mobile/tablet video playback: The screen has its own LED backlight, which will interfere with the imaging law of 940nm infrared light.

• HD 3D mask: Although it can mimic stereoscopic contours, it lacks the light transmission and subcutaneous blood flow signals of human skin.

3. You can handle extreme situations

· Late-night all-black environment: In vivo detection relies on actively emitted infrared light rather than ambient light sources.

· Strong backlight scenes: Adaptive light sensing system will suppress sunlight/light interference.

· Wear sunglasses/goggles: living bodies can still be identified through unobscured facial areas (e.g. apple muscles, corners of the mouth).

Security and performance of Face Recognition Smart Lock.

In the actual experience, you can't feel these processes at all - from the time you look up to the face id door lock to the door opening in about 0.8 seconds, the system has completed more than 30,000 feature point comparison plus 16 living indicators verification. The next time someone asks, "Can I pick a lock with a selfie?" You can tell him directly: "Unless you can build a breathing, warm robot face with microexpressions, you can't even get past the first line of defense."

In conclusion, 3D structured light face technology is very safe and reliable, and even the secret agents in the movie can't crack the face recognition door lock. The essence of technology is not to create anxiety, but to make the sense of security sufficiently "unfelt." Next time, we'll talk about how 3D structured light works at -30 ° C and exposure to sunlight.

If you have any question or interesting on our product, please feel free to contact us anytime!