> It doesn't work when I am not wearing my glasses
FaceID works with and without my glasses. I can't remember if it learned this automatically, or if I added it as an "alternative appearance." Does the Pixel 4 have any options like that?
FaceID is designed to work with or without glasses.
> Face ID is designed to work with hats, scarves, glasses, contact lenses, and many sunglasses. Furthermore, it's designed to work indoors, outdoors, and even in total darkness.
FaceID works with my regular glasses but some of my sunglasses do not work at all (0% unlock rate with over 100 attempts in various lighting). I think it may depend on the shape of the frame and how much of your face it takes up? Not sure.