3 ms·

How old is older? - faceid can have issues with young siblings, and of course identical twins.

• dougSF70 5y ago
  Boy is 13, his sister is 17. They have different noses.
  • taxcoder 5y ago
    I should hope. Sharing noses would come with great difficulties.
  • olliej 5y ago
    I realized another thing that can happen is that if you have two sufficiently similar looking people. Basically person B tries to use their face to unlock A’s phone and then A unlocks it. If they are sufficiently similar the phone could theoretically expand its knowledge of what A looks like so that B’s face triggers a positive match. I have no idea how close in appearance they’d need to be for Faceid to do this though.