Closed Circuit Television, also known as CCTV, is a network of security camera transmitting data to television screen and video recorder as well. CCTV security camera is directly linked with the monitor. This linkage system effected via cable and wireless security cameras also effected point-to-point transmission. CCTV security cameras used for the very sensitive and security needed areas. CCTV security cameras are basically used for the security of Banks, Public places, Airport and Military purpose. It was also used during Rocket launches to monitor the launch-pad activities.

Modern CCTV cameras are the small sized color cameras, which focuses every moment. It works automatically if it is linked with a computer. The camera is able to check the thousands of faces in a database within a second. The latest computerized monitoring CCTV imaging technique is developed in England and United States. There is a special use of CCTV technique i.e. to discover the unidentified flying objects. CCTV security camera is also needed for the security conscious and wealthy people.