Originally Posted by: AkiraYeah, but they make the guy with the knife or with the gun think twice about stabbing/shotting someone.

well thats the problem,such people don't care.No surveillance will stop all attacks or crimes.I'm simply saying,you shouldn't trust your saftey to cameras..unless there are turret guns on the camera's that shoot offenders once a threat is percieved by the internal CPU... then you should just run(but that might be assessed as threatening movment).