> I'm curious what you think the solution is? > > Taking a photograph of a car with its license plate is legal. As is selling a photo you've taken, whether it has a license plate or not. > > Therefore taking millions of photos in public of cars, and turning their license plate numbers into a database is legal, as is selling that information. It's all data gained in public. > Collecting and selling PII without a person's consent is certainly not legal in many places.