Anybody from USA knows how this works?
 

I used to live in the USA (West Coast) for some time, and it looks like all businesses (gas station, fast food restaurants, hotels, whatever it would be) are connected to each other with one computer / Internet network, or something like that. People from Albertsons in any place of the city can communicate with people in any Smiths, any Taco Bell, any McDonalds, and so on. This would be the management, only management has access to this. I think it is also connected to cops, face recognition cameras, could be other things.

Is it something that is required for any business, then there is cameras installed in a place, certain software added, and it all gets connected to the network? Every business needs to be part of it, I think.

Any info on this?

NSA controls it all

I know that you can be in Los Angeles, they can put your face in the system, and they will spot you in New York City or Miami, just based on that. I heard that all license plates (I am not sure if all) are getting recorded / tracked (see cameras on the intersections of the streets, and not only).

Random intersection LA

I think that there is software, which is able to recognize unusual patters in movement of cars, or something like that. I know it is all pretty advanced in the USA.