Consumer vs Prosumer devices in General Digital Discussion Posted October 3, 2016 Is motion detection and motion zones part of the camera or the NVR? I'm not too sure about this but I would guess it's part of the software on the NVR Correct. It would be a function of the NVR, rather than the camera. Zones can be set up on the NVR to mask off areas that you don't want to be detected. Like if a particular camera is facing the road, and you don't want it recording every time a car passes through its FOV. That is incorrect, with these systems the motion detection is done in the camera.