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surveillance, espionage and police investigations. Self-contained electronic covert listening devices came into common use with intelligence agencies in the 1950s...

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...

2009. Photophone Passive radar Laser Doppler vibrometer The Thing (listening device) List of laser articles Laser turntable Optical heterodyne detection...

electronics are electronic (analog or digital) equipment intended for everyday use, typically in private homes. Consumer electronics include devices used for...

incarcerated at Farm Hall, an English house fitted with covert electronic listening devices, for six months. Harteck studied chemistry at the University...

and early 1900s and were used for listening to audio signals from radios, phonographs, and, later, electronic devices. In the 1950s and 1960s, LED and...

Abinanti for $40,000. On April 7, 1972, law enforcement placed an electronic listening device inside Vario's trailer at the junkyard and started gathering...

this file? See media help. The stethoscope is a medical device for auscultation, or listening to internal sounds of an animal or human body. It typically...

Electronic tagging is a form of surveillance that uses an electronic device affixed to a person. In some jurisdictions, an electronic tag fitted above...

detecting surveillance devices. It can also include covert listening devices, visual surveillance devices, and countersurveillance software to thwart unwanted...

wireless devices are being used simultaneously. The sweep is generally limited in bandwidth to only the operating bandwidth of the wireless devices. For instance...

detection and removal of the true listening devices by its American occupants nearly impossible. Covert listening device "Charles Bovill, inventor". Crypto...

trunk of the palm. Recent research has been conducted using electronic listening devices or dogs trained to recognize the scent of weevils or palm decay...

Barker and James W. McCord, Jr. were arrested while installing electronic listening devices in the national Democratic Party campaign offices located at...

Hill's trials; a pair of thumb screws; a detector for finding electronic listening devices; and the U.S. Treasury's forensic handbook with the passages...

Within ghost hunting and parapsychology, electronic voice phenomena (EVP) are sounds found on electronic recordings that are interpreted as spirit voices...

electromechanical devices include the telharmonium, Hammond organ, electric piano and electric guitar. The first electronic musical devices were developed...

apparent when listening to sounds that sustain for longer periods of time. The chorus effect is especially easy to hear when listening to a choir or string...

see Batwoman as one of their agents. Thanks to Bette Kane's electronic listening devices, Batwoman's entire family and Maggie Sawyer realize what Batwoman...

headphones, projectors, GPS devices, optical mark readers, and braille readers. In an industrial setting, output devices also include "printers" for paper...