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During World War II, the Nazis took over a Berlin brothel, Salon Kitty, and used concealed microphones to spy on patrons. Also during the war, the British used covert listening devices to monitor captured German fighter pilots being held at Trent Park. In the late 1970s, a bug was discovered in a meeting room at the OPEC headquarters in Vienna.
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 ...
Cellphone surveillance (also known as cellphone spying) may involve tracking, bugging, monitoring, eavesdropping, and recording conversations and text messages on mobile phones. [1] It also encompasses the monitoring of people's movements, which can be tracked using mobile phone signals when phones are turned on. [2]
Hidden video cameras may or may not have audio recording capabilities. Hidden cameras may be activated manually, remotely, or through motion detection. A hidden camera may not be visible to the subject, for example, because it is fitted with a long-focus lens and located beyond the view of the subject, or because it is obscured or hidden by an ...
The possibility of performing forensic audio analysis depends on the availability of audio recordings made outside the boundaries of a recording studio. The first portable magnetic tape recorders appeared in the 1950s and soon these devices were used to obtain clandestine recordings of interviews and wiretaps, as well as to record interrogations.
A voice-activated radio-dispatched alarm, or VARDA-alarm, is a type of burglar alarm that, when activated or "tripped", broadcasts the type of the alarm and the transmitter location over the local police radio frequency using a pre-recorded audio message. [1] In 1968, the voice-activated radio dispatched alarm (VARDA), was invented.
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