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.