There are plenty of facial rec systems. Thinking of systems like in iOS Photos, or any of the other similar photo library systems. I think pretty much everyone would be freaked out if they started IDing people in your local libraries.

Facebook was doing that 10 years ago

Note that there is no difference in the model or in the training. The only thing needed to convert ios photos into one that IDs people is access to a database mapping name to image. The IDing part is done after the "AI" part, it's just a dot product.

unsure what you mean by starting IDing? Majority business in US does it already, all banks use facial recognition to know who comes through their door (friend who works in IT at Bank of America told me they implemented it cross all Florida branches sometime in 2009), most large chain gas stations as well, so does car rentals, most hotels, etc. I was recently booted out of Mazda Dealership in Florida because 11 years ago in Georgia I sued Toyota Dealership for a lemon sell, and now they both under same ownership and my name came up on "no business" alert when I entered their offices.

Huh? What relevance does that have with the discussion?