I use Windows Hello to sign into this tablet, but because it's cold out and my ears were unhappy with that, I decided to wear the following instead of my AH military cap.
It didn't recognize me. I had to train it for the AH beanie thing. Strange that it includes hatwear close to the eyebrows in the recognition process. Though, I already know that my cap on other people doesn't work. I feel certain that this beanie thing wouldn't work on other people, either.