KnowraClosed-circuit televisionLinked fromLinked fromThe 12 pages that link to Closed-circuit television, each with the reason it gives.All 12Broader topic 1Related 7Compared with 4Television broadcastingCompared with: Closed-circuit systems serve restricted audiences, unlike broadcasting's one-to-many public distribution.Crime prevention through environmental designCompared with: Cameras can observe spaces without changing the spatial design that shapes everyday visibility.WatchtowerCompared with: Cameras can observe remotely or continuously without placing an observer in the tower.Surveillance aircraftCompared with: Fixed cameras observe confined sites; aircraft survey much larger areas from above.