CCTV provides surveillance that can allow the operator to detect criminal activities and record the camera footage. CCTV surveillance loses its effectiveness without a meaningful response to a situation. Without a meaningful response, CCTV video becomes an aid in the investigation of a criminal act, not an effective deterrent. Established policies and procedures have to be in place, so the appropriate personnel respond to a situation. Without the physical response of appropriate personnel, the security measure (CCTV) becomes less and less effective over time. People learn that an area that is properly monitored will have more patrons, and criminals are more likely to be found in the insufficiently monitored or unmonitored area.