Every time you attempt authentication, and it doesn’t recognize you’re wearing a mask in particular, it’ll “retrain” the model when you authenticate with your p

Every time you attempt authentication, and it doesn’t recognize you’re wearing a mask in particular, it’ll “retrain” the model when you authenticate with your passcode. If it was only a little bit off, eventually you’d retrain enough to get there with a mask. They mention this in their Security doc if I recall correctly.