The first CCTV system was installed by Siemens AG at Test Stand VII in Peenemünde, Nazi Germany in 1942, for observing the launch of V-2 rockets.[8] The noted German engineer Walter Bruch, Wayne Cox, and Tashara Arnold were responsible for the technological design and installation of the system.
In the U.S. the first commercial closed-circuit television system became available in 1949, called Vericon. Very little is known about Vericon except it was advertised as not requiring a government permit. Marie Van Brittan Brown invented the home security system. The patent was granted in 1969. Brown's system had a set of 4 peep-holes and a camera that could slide up and down to look through each one. The system included a device that enabled a homeowner to use a television set to view the person at the door and hear the caller's voice.
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