Parted Your Hair A Different Way? Your Device Might Not Unlock

"The computer was like: 'Oh my God, girl. You got to go back and fix yourself up. You're looking bad,' " recalls Ms. Cummings, 72 years old, of Fryeburg, Maine. "When I get up in the morning, I know I look bad, but I don't want the computer telling me that." The rise of facial-recognition technology such as Microsoft Corp.'s Windows Hello and Apple Inc.'s Face ID means computers now seem to be passing judgment on users' appearances.