Safety of Face ID system for eyes?

Hi,

I'm considering a purchase of iPhone X. I have a concern about safety of dot projector in iPhone X for my eyes.

As I understood, dot projector in iPhone X emitts infrared rays for the work of Face ID function.

It should work fine in normal conditions with ambient light and at normal distance when we hold the iPhone (in 10-20 inches from our face).

However what will happen:

A. If I turn on the iPhone X at night in full dark?

B. Or I accidentally turn on the iPhone X from close distance to my face (within 1-2 inches) ?

May the dot projector in iPhone X damage retina in my eyes?

A pupil in the eye reacts only to a visible light, not to infrared light. And in the dark pupil is fully open and eye will get all the light from infrared dot projector.

I'm wondered that nobody raise this subject before.

Posted on Oct 26, 2017 1:35 AM

17 replies

ckuan

Level 10

120,914 points

Oct 27, 2017 2:26 AM in response to Igor Kokarev

You're welcome, and have a good one.

Baintek

Level 1

9 points

Dec 2, 2017 6:02 PM in response to ckuan

You can switch it off but the flood illuminator continues to pulse light whenever the phone is active.

Test it yourself using a handycam.

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Safety of Face ID system for eyes?

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