People here might be interested in Zennioptical's ID Guard technology, if they wear glasses. Evidently it's not perfect, but it does at least partially work: https://youtu.be/HOBdJ6nU03o?si=E_a6rMPAz5AOwytm
Business opportunity: sell covid masks with patterns designed to thwart facial recognition on them.
Why are they covid masks anyway? Medical personnel wears them during surgery, and there were those photos of ... some asian people i think ... wearing them outdoors to protect themselves from air pollution in their city too.
At best it degrades overall recognition but doesn't fully prevent it