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26.07.2018 - 14:42 [ Wikipedia ]

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 Soviets to the US Ambassador to Moscow on August 4, 1945. Because it was passive, being energized and activated by electromagnetic energy from an outside source, it is considered a predecessor of RFID technology.