[tessela]

Yes, you can, if the device's owner is wearing glasses.

[wintermutestwin]

Wrong. There is a setting called "Require Attention for FaceID" that is on by default. If the user is wearing sunglasses, sometimes FaceID fails and so that might be a reason why you would turn this off. It works fine with clear glasses.

[msh]

Do you have any references for that?

I wear glasses and it still check for activity in my face.