Facial Recognition

Hello once more~ Like your digital Touch ID fingerprint … your Face ID data is stored in something called the iPhone’s Secure Enclave. You can probably research this more fully on the web. I hope this points you in the right direction.

~Katana-San~

According to Apple:

The technology that enables Face ID is protected within the Secure Enclave.

The probability that a random person in the population could look at your iPhone or iPad Pro and unlock it using Face ID is less than 1 in 1,000,000 with a single enrolled appearance whether or not you're wearing a mask. As an additional protection, Face ID allows only five unsuccessful match attempts before a passcode is required. 

Hello ~ What seems to be the technical issue you are having? Are you seeing an alert or message?

~Katana-San~