Face ID, Touch ID, No ID, PINs and Pragmatic Security
It appears that FaceId only supports a single face (unlike TouchId, which supports multiple fingers).Maybe this use case isn't common, but my wife frequently needs access to my phone.  Usually while driving, to change GPS routing, or playlist, or respond to SMS.  With TouchId, she can do so without my PIN.  With FaceId, she needs my PIN.This strikes me as both less secure and quite annoying. Now, I have to repeat my PIN out loud while she types it into the device.  Or, force her to memorize it (in addition to her own PIN, and I have to remember hers for the reverse situation).