Ask HN: Is FaceID harmfull for your eyes?

Re:Ask HN: Is FaceID harmfull for your eyes? by rhinoceraptor on Tuesday October 30, 2018 @09:40AM (#18336311)

Everyone is exposed to an extremely powerful nuclear fusion IR flood illuminator every day, it's called the Sun. I doubt the tiny IR LED in your iPhone would cause any issues.

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Re:Ask HN: Is FaceID harmfull for your eyes? by sfilargi on Wednesday October 31, 2018 @01:29AM (#18343558)

The difference is that when you are outside in the sun, there is visible light too, which means your pupils are about 2mm.

When you are in a dark room, they can be up to 8-9mm. This means 15x more light allowed in.

I am not saying that the LED in the video will destroy your eyes, but I do wonder if the eye-pain induced by the iPhone X that I had the past year is because of that.

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Re:Ask HN: Is FaceID harmfull for your eyes? by NullPrefix on Tuesday October 30, 2018 @01:00PM (#18338795)

And you have been trained not to look at it. Haven't you?

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Re:Ask HN: Is FaceID harmfull for your eyes? by rhinoceraptor on Wednesday October 31, 2018 @04:45PM (#18349161)

Infrared is light, and light is reflected. You don’t need to look directly at the sun to get get it in your eyes.

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