Incredible Advances in Surveillance Device
Posted on May 10, 2008
Private investigation and industrial counter-espionage makes use of many devices that are so technically advanced, it makes the job a lot easier and exciting. A pinhole camera can be placed behind a wall so that the next door room can be monitored audibly and visually. It would need the examination of every walls, floor and ceiling surface with a magnifying glass to detect the camera lenses that are the size of the head of a pin. It can also photograph silently in almost total darkness.
Another surveillance camera is concealed in a small mobile telephone with the camera lens recording through a tiny hole typically used for the microphone. Still another is a micro transmitter surveillance bug that is powered by a miniature battery that can last for three months. It can broadcast up to one thousand yards to a radio receiver on any chosen FM frequency.
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