Pending on state, my state allows it. Yes I would run my recorder 24/7 when OC. I heard never to TURN IT on just before a problem is going happen Keep it on because if someone sees you reaching in your pocket like LEO they could think you have another weapon. I bought a recorder for $40 it works great holds 24hours on high mode or 524hours on low record mode. Never run low mode, only high so it can pick up better sounds.