how face id works

Can strangers unlock your phone with Face ID? How to prevent this?
if you use facial recognition on your smartphone, the face of a sibling or someone like you can also be unlocked.
How does Apple's Face ID work?
apple's face id technology is only available on its iphone x, replacing touch id to unlock the phone by face recognition. although the technology used for face id is not new, apple claims it has been claimed. better cascades than ever.