Closed Circuit Television (CCTV) is a television transmission system in which live or prerecorded signals are sent over a closed loop to a finite and predetermined group of receivers, either via coaxial cable or as scrambled radio waves that are unscrambled at the point of reception. CCTV has many industrial and scientific applications, including electron microscopy, medical imaging and robotics, but the term “closed circuit TV” refers most often to security and surveillance camera systems. In this case it is the use of security cameras to transmit a signal to a specific, limited set of monitors. CCTV is mostly used for surveilance in places that may need monitoring examples are: airports, stores, banks etc. In industrial plants, CCTV equipment may be used to observe parts of a process from a central control room; when, for example, the environment is not comfortable for humans. CCTV systems may operate continuously or only as required to monitor a particular event.

Closed-circuit cameras are most of the time used to discourage and deter crime. While they don’t necessarily eliminate crime, closed-circuit cameras do make it possible to identify events and suspects, making is easier to detect and prosecute those involved in a crime. Another use of closed-circuit cameras is to monitor traffic, eg License Plate Capture Security Cameras are installed in various places, taking a picture of your license plate and with the help of radar technology, recording your speed. In many States in the US, you may receive a speeding ticket with a picture of your car and the speed u were running, or a picture of the time and place you ran a red light.