https://www.entrepreneur.com/article/350029

The pandemic is prompting Apple to make a change to the company’s Face ID technology: If the system detects you wearing a mask, your iPhone will ask for your passcode rather than needlessly scan your face a few more times. 

The tweak, spotted in the iOS 13.5 beta 3 release, will help users avoid unnecessary hassle when unlocking an iPhone while wearing a mask.