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Article: Closed-Circuit Television (CCTV)

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Encyclopedia of Espionage, Intelligence, andSecurity
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Closed-Circuit Television (CCTV)

█ LARRY GILMAN

Closed-circuit television (CCTV) involves the use of video cameras to produce images for display on a limited number of screens connected directly to a non-broadcast transmission system (e.g., a network of cables). Commercial cable TV is, technically, an example of CCTV, but the term "closed-circuit TV" is generally reserved for systems serving a small number of screens that are monitored for security purposes. CCTV is a ubiquitous feature of institutional security systems. It is employed by prisons, banks, urban police forces, airports, military organizations, utilities, large corporations, various other organizations, and ...

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