Face ID can recognize more than one face in iOS 12
It can be activated via a new option in Face ID settings, somewhat cryptically called "Set Up an Alternative Appearance." The description below the new toggle is similarly vague, elaborating that, "In addition to continuously learning how you look, Face ID can recognize an alternative appearance."
Jokes aside, this feature is likely intended to be used for parental control in a future iPad with Face ID support, though it's made its way to the iPhone X as well.
One of the current downsides of multi-user support is that you can't reset just one of the faces you've enrolled into the system, 9to5Mac reports. Instead, if you want to add a new face, you'll be forced to clear out both faces and them anew.
source: 9to5Mac
FCC OKs Cingular\'s purchase of AT&T Wireless
Things that are NOT allowed: