Real-world test shows Apple Face ID failing to distinguish siblings
Theoretically, Face ID shouldn’t unlock the phone if you and your sibling aren’t identical and are five years apart in age.

Theoretically, Face ID shouldn’t unlock the phone if you and your sibling aren’t identical and are five years apart in age.
Since the Bloomberg story exploded and users reacted, Apple has responded to the assertion made by Bloomberg.
When Apple makes a choice to drop a feature, you can bet it’s not going back down (cough…headphone jack).
I do think they should have kept Touch ID as a backup, but Apple’s motto is usually all or nothing.