Perhapes we should just require the camera to be turned on and on their person for them to have the legal privileges and protections that we grant to law officers. If they turn it off or leave it behind for example during a restroom break then they are, under the eyes of the law, a civilian until it is turned back on. and any evidence "found" somewhere that they had gone without the camera while off the clock as it were is either inadmissible or must have a hire bar to be able to be used. so on planting drugs on a piss break to just walk in again with the camera on and "find it"