This is the first suggestion I've seen that made me go, "Cool!". Mostly because it doesn't involve trying to graft some crazy scanner/computer/tracker onto a gu

This is the first suggestion I've seen that made me go, "Cool!". Mostly because it doesn't involve trying to graft some crazy scanner/computer/tracker onto a gun, which is impractical. There'd probably have to be someone actively monitoring detections so that car backfires and fire crackers don't create false positives.