Face ID for several years is the norm biometric identification. The facial recognition technology not only fast and convenient but also extremely reliable. According to Apple, there is only 1 chance out of 1 000 000 cheat Face ID, while the Touch ID – 1 50 000. Quite a powerful argument in favor of the new technology, which also works quietly. Well, at least it seems so to us, because our eye does not perceive infrared radiation, which is the basis of technology and is responsible for scanning the faces before they remove the block. However, it is believed that this is the most radiation can pose a hazard to human vision.

Despite the fact that the potential damage from infrared rays Face ID was discussed back in 2017, when iPhone X only went on sale fairly quickly, this topic was forgotten. Apple chose not to make official statements, and each of the users remained unconvinced. Some decided that no harm vision Face ID can not deal and continued to use the facial recognition technology, others considered the risk of unreasonably high and rejected it, and the third, though, and continued to think about the danger, just compromise, given the incredible convenience of the interface. But how are things really?

How does Face ID

To begin with it should be with the fact that the basis of the Face ID is a laser emitter. He is projecting on your face 30 thousand points that define its topography and compare with the image on the iPhone. However, the emitter the emitter strife and one may differ from another in degree of power. On the basis of these indicators and calculated their safety. There are 4 security class. The first are lasers and laser systems of very low power, and the fourth – lasers and laser systems high power.

What are they so dangerous? Science says that infrared light can heat objects that they affect. Therefore, it is highly likely that they have to heat up and the retina of the eye, bringing to it a negative impact, possibly leading to vision loss or other disabilities. But this applies to high-power emitters, while Face ID, most likely, is not.

It is logical to assume that in Face ID set laser low power, referring to the first class. However, Apple does not publish in open access any data on the power of his set face recognition or the wavelength, and therefore make an unambiguous conclusion about the safety class of the laser is impossible. However, the company claims that the scanning of the face by the Face ID does not cause a user’s eyes any harm. About this stated in the EULA, which is available on the official Apple website.

iPhone, iPad Pro and camera system TrueDepth have been thoroughly tested to meet international safety standards. System cameras TrueDepth safe under normal conditions of use. Its radiated power is very small, so it does not harm the eyes and skin, says Apple.

Safe Face ID

Everything seems to be clear and correct. In the end, it will not be Apple to equip your smartphone in an unsafe technology that could have a negative impact on vision or the condition of the skin of its users? But I wonder about the question formulation “under normal conditions”, which uses the company. What exactly is meant in Cupertino, when you make such a reservation? It is obvious that it is given here not by chance, but then there are some unusual conditions, the use of Face ID which can render harm. Fortunately, I think I know the answer to this question.

In 31581-2012 GOST (the Russian GOST, but probably in the United States and all other countries have equivalents) stated that protection from infrared radiation laser products of the first and second classes is either not required at all (1 class) or (class 2) by the natural reactions of the person, namely the reflex of blinking. So, if you want to protect yourself from potential harm, just need that to continue to blink and not to keep your eyes open until then, until they begin to tear from the natural drying.

Sore eyes from Face ID

What happens if you do not blink or blink less often than they should? Unknown. Apple does not set any requirements for the frequency of blinking, and did not say directly that this physiological process can somehow protect you. So I would recommend to focus on their own feelings. For example, the author blackget.com Artem Sutyagin claims that at some point I realized that his eyes were often tired:

I first encountered Face ID two-and-a-half years ago, when one of the first to buy the iPhone X. We filmed a review on it and I was confused that in the area of sensors, even when the smartphone is unlocked, still blinking every few seconds. Apparently, it was IR illumination. I did not ”spin” the issue, but I wonder whether it is harmful to the eyes. After a while I began to notice that I often have tired eyes. Maybe it happened because of a transition to OLED, and maybe because of the constant meetings with the scanner face. Because the smartphone rasplachivaetsya a few dozen times a day. Answer to your questions, I have not received yet but reason to think it is.