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." ...

How to set up Face ID on your iPhone to increase the security of your device and data

You can set up Face ID on an iPhone in just a few seconds in the "Face ID & Passcode" section of your phone's Settings app.
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Apple Face ID: what is it and how does it work?

How your iPhone or iPad knows what your face looks like - here's the ultimate guide to Apple's face recognition tech ...