That is part of what I meant with "Better for the cops". If the cops routinely log everything, this shields them from orders of this kind. Because those would also get logged. The idea being that the system is always on during working hours. It would also be a helpful investigative tool, just because digital storage stomps all over memory for reliability, and with good tagging habits, one could go back and review things, and check with coworkers if witness seven is as suspicious as he seems to you, or if he just did not like the cut of your jib.