[KZeillmann]

Fingerprint sensors work in the dark. Facial unlock doesn't.

Edit: looks like I'm probably wrong on this one

[AimForTheBushes]

I've been able to unlock my iPhone 11 in nearly complete darkness.

[rumblefrog]

Infrared does not work like that

[fetus8]

Facial Unlock does work in the dark because it uses IR, and not just a camera.

[Hamuko]

As long as it's a proper implementation of a face unlock. When the iPhone X came out, OnePlus was quick to jump on the bandwagon and start advertising their new face unlock, which was completely reliant on the front-facing camera.

[angry_octet]

Which tells you it can be tricked with just the IR picture.

[baby]

This is not true

[iknowstuff]

Yes, it does.