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The Thing (listening device) The Thing, also known as the Great Seal bug, was one of the first covert listening devices (or "bugs") to use passive techniques to transmit an audio signal. It was concealed inside a gift given by the Soviet Union to W. Averell Harriman, the United States Ambassador to the Soviet Union, on August 4, 1945.
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. Self-contained electronic covert listening devices came into common use with ...
The assistive listening device usually uses a microphone to capture an audio source near its origin and broadcast it wirelessly through means of frequency modulation (FM), infrared (IR), an audio induction loop, or another method. The person who is listening may use a wireless Receiver to tune into the signal and listen at their preferred volume.
Stingray phone tracker. A Stingray device (CPU console) in 2013, in Harris's trademark submission [1] The StingRay is an IMSI-catcher, a cellular phone surveillance device, manufactured by Harris Corporation. [2] Initially developed for the military and intelligence community, the StingRay and similar Harris devices are in widespread use by ...
Information is provided on aspects of ALDs, including: the different types of ALDs; frequency modulated (FM) systems; soundfield amplifications systems; induction loop systems; benefits of using assistive listening devices (such as portability and usefulness in classroom or small group); and strategies for using assistive listening devices ...
Operation Easy Chair was a joint covert operation of the US Central Intelligence Agency, the Dutch Internal Security Service (BVD), and the Dutch Radar Laboratory (NRP) from 1958-1962. The goal of the operation was to place a covert listening device in the office of the Russian Ambassador in The Hague. [1]
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