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  2. Covert listening device - Wikipedia

    en.wikipedia.org/wiki/Covert_listening_device

    It is illegal to use listening or recording devices that are not permitted for public use. Individuals may only use listening or recording devices within reasonable privacy laws for legitimate security and safety reasons. Many people use listening devices on their own property to capture evidence of excessive noise in a neighbour complaint ...

  3. Hidden camera - Wikipedia

    en.wikipedia.org/wiki/Hidden_camera

    A hidden camera can be wired or wireless.Hidden cameras connected, by cable or wirelessly, to a viewing or recording device, such as a television, computer, videocassette recorder, network video recorder, digital video recorder, memory card, or another data storage medium.

  4. Wire recording - Wikipedia

    en.wikipedia.org/wiki/Wire_recording

    The 1958 spy thriller Spy in the Sky! uses a wire recording as a plot device. In the episode "The Relaxed Informer" (S1E24) of Danger Man the spy courier is smuggling a recording made on wire secreted inside the handle holding a puppet's strings. The recording wire is later shown being played in an office using a wire player.

  5. The Thing (listening device) - Wikipedia

    en.wikipedia.org/wiki/The_Thing_(listening_device)

    The device, embedded in a carved wooden plaque of the Great Seal of the United States, was used by the Soviet government to spy on the US. On August 4, 1945, several weeks before the end of World War II , a delegation from the Young Pioneer Organization of the Soviet Union presented the bugged carving to Ambassador Harriman, as a "gesture of ...

  6. Closed-circuit television - Wikipedia

    en.wikipedia.org/wiki/Closed-circuit_television

    Later, videocassette recorder technology became available in the 1970s, making it easier to record and erase information, and the use of video surveillance became more common. [13] During the 1990s, digital multiplexing was developed, allowing several cameras to record at once, as well as time lapse and motion-only recording.

  7. FBI penetrated New York-based Russian spy ring using ... - AOL

    www.aol.com/article/2016/03/09/fbi-penetrated...

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