Earlier quoted context omitted.
It's funny how assumptions betray us. Not everyone is on their phone, or a laptop. On a site for tech enthusiasts, there are a shocking amount of folks with very "tech is what you get at the Apple Store" mindsets about.
On a site of tech enthusiasts I'd expect an intelligence level of understanding the difference between an embedded ADAS camera and a surveillance system. So how about you check you assumptions first? :)
Any system used to surveil is a surveillance system, QED.
There's no minimum fidelity required, you could use potentially any sensor to surveil. It's a question of use.