FaceID works totally fine with your sunglasses on and in bright light... It does fail if you have a mask on, if you have goggles covering half your face, or if you have a helmet that covers your face... but to me that is all completely understandable.

And also something that you can partially alleviate with alternative appearances in the FaceID settings, depending on how much of your face you're covering.

Seems comparable to:

- not working with gloves on

- not working when too hot (sweat) or too cold (?)

- changing your grip to get a good print placement

Yes, I will admit that it's not great with a face mask. But then that wasn't really an issue until a few weeks ago. Never had problems with glasses or too much sunlight but that might just be a perk of living in a country that's not particularly sunny.