[landa]

Face ID works way better for me. I couldn't get the fingerprint reader to recognize my stupid sweaty fingers sometimes, but Face ID always works for me.

You can unlock your phone in the dark. It doesn't rely on visible light, as it shines its own infrared light on you. You were probably holding your phone too close to your face.

[Judgmentality]

I know how the sensor array works - I've personally built structured light sensors for robots.

It doesn't work for me. I'm glad it works for you.