Not that it's ideal, but if it's the same type of mask each time, you might consider enrolling your face with the mask on as an alternate appearance (you can re

Not that it's ideal, but if it's the same type of mask each time, you might consider enrolling your face with the mask on as an alternate appearance (you can record 2, I believe) in FaceID. I assume that the mask covers only a portion of your face; if it's a full-face mask, then obviously this would greatly degrade your device's security by allowing anyone wearing that mask to unlock it. However, I've found that Face ID can do a pretty good job of recognizing you from the nose up.