Technically, compared to say Android Face Unlock: Infrared instead of visible light, uses depth information, detects user attention, has specialized hardware to

Technically, compared to say Android Face Unlock: Infrared instead of visible light, uses depth information, detects user attention, has specialized hardware to speed the vision processing. So to an end user, it works in the dark, can’t be fooled by a photograph or a wax model, can see through veils and most sunglasses, and works really quickly. You also don’t have to see the selfie UI every time you unlock your phone. The fact that iOS devices also have a Secure Enclave to store biometric information in a tamper-resistant area is nice too.