iOS 15.4 lets you unlock your iPhone's Face ID even when wearing a mask — here's how to set it up

To set up Face ID with your mask, update to iOS 15.4, then head to the Settings app and tap "Face ID & Passcode." ...
CNET

iPhone Face ID is pretty cool. Here's how it works and how to use it

Using your face to unlock your phone or tablet or buy ... which they then use to map your curves and wrinkles. On an iPhone you can use Face ID only when you hold the iPhone vertically. On an iPad Pro ...