https://techcrunch.com/2022/01/27/latest-apple-os-betas-deliver-face-id-with-a-mask-and-universal-control/

Apple just dropped a bunch of new OS betas, bringing a pair of long-awaited features. IOS Beta 15.4 delivers the ability to unlock your phone with Face ID while wearing a mask (really upper-Face ID, if we’re going to be pendantic about it), while versions beta 15.4 of iPadOS and MacOS 12.3 deliver the delayed features, Universal Control.

Face ID with a mask on has — for obvious reasons — been a hotly requested feature since the outset of the pandemic. In April 2020, a feature was first reported that would drop the user to a password input screen when the phone spots a mask, and last February, iOS 14.5’s developer beta brought with it the ability to unlock the phone via a connected Apple Watch — a clever workaround of sorts.