Without an on/off switch, a dashboard camera is typically wired into a circuit that is only hot when the ignition key is in the start or run position. And without any sort of recording controls, dashboard cameras are typically designed to record continuously whenever they are powered up.
What is the purpose of a dash cam?
A dash cam, dashboard camera, car DVR, or car black box is an onboard camerathat continuously records the view through a vehicle’s windscreen. It may be attached to the interior windscreen or to the top of the dashboard, by suction cup or adhesive-tape mount.