How to train Face ID to recognize weird facial expressions

To simplify a very complex process; Face ID captures your facial structure and uses it to identify you and then unlock your iPhone. It also learns the ways in which your face changes over time and throughout the day. If, for example, your eyes are really puffy in the morning, Face ID learns that its still you, but with a slight change in your “expression.” iMore Editor in Chief, Rene Ritchie, explained how Face ID uses machine learning to recognize minor changes to your face.

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How to train Face ID to recognize weird facial expressions