Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. Though almost all video cameras fit this definition, the term is most often applied to those used for surveillance in areas that may need monitoring such as banks, stores, and other areas where security is needed.
CCTV systems act as a real deterrent against criminal activity, as the likelihood of being identified is very high. Modern systems offer pin sharp images that can be recorded without the need for video tapes. You can monitor movement in real time so preventative action can be taken immediately as well as identifying criminals after the event.