So I've noticed that if I register my face with Windows Hello wearing eyeglasses, I should keep that pair around, because Windows uses them as an important feature. Kind of like obtaining your USA driver's license while wearing eyeglasses. Your license may then state that eyeglasses are compulsory. After a recent haircut, Windows assumed I was someone else. I almost expected Cortana to comment about the cut. My wife certainly did. My grandkids recognize me without the glasses, but not Windows. No worries, though. Hello works well. But I wonder if Windows expects some people to: - Be drinking a beer - Roll their eyes - Have an extra chin - Wear a coat and tie - Be shirtless - Dangle an earring or two - Be in portrait orientation (head sideways) etc. ... after registering that way. Just kidding. Hello works fine.