Face ID works accurately when recognizing the entire face. Therefore, I could not use Face ID when wearing a mask, but … You can set Face ID while wearing a mask to recognize and authenticate features around your eyes. If you normally wear glasses, put them on and rescan Face ID.

How to use Face ID while wearing a mask

iPhone settings

Enter passcode

Set Face ID when wearing a mask

Turn on Face ID when wearing a mask

Settings for people who wear glasses

add glasses

move your head slowly

Face ID scan completed

Face ID setup complete