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A covert listening device, more commonly known as a bug or a wire, is usually a combination of a miniature radio transmitter with a microphone. The use of bugs, called bugging, or wiretapping is a common technique in surveillance , espionage and police investigations.
The CIA ran a secret research program at the Dutch Radar Laboratory (NRP) in Noordwijk in the Netherlands from 1954 to approximately 1967 to create its own covert listening devices based on a dipole antenna with a detector diode and a small microphone amplifier. The devices were developed under the Easy Chair research contract [11] and were ...
On 25 August 2009, U.S. patent 7,580,533 was issued for a device that uses a laser beam and smoke or vapor to detect sound vibrations in free air ("Particulate Flow Detection Microphone based on a laser-photocell pair with a moving stream of smoke or vapor in the laser beam's path"). Sound pressure waves cause disturbances in the smoke that in ...
The Duquesne Spy Ring is the largest ... near Central Park and used a hidden microphone to record ... tracking devices for long-range guns capable of hitting moving ...
In an hour-long procedure, a veterinary surgeon implanted a microphone in the cat's ear canal, a small radio transmitter at the base of its skull, and a thin wire into its fur. [2] This would allow the cat to innocuously record and transmit sound from its surroundings.
Special Collection Service (SCS): A black budget program that is responsible for "close surveillance, burglary, wiretapping, breaking and entering." It employs covert listening device technologies to bug foreign embassies, communications centers, computer facilities, fiber-optic networks, and government installations. [33]
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