Photo: Artem Zhitenev / RIA Novosti
Israeli scientists have described the way of espionage with the use of household light bulbs. For wiretapping need a special magnifying device and equipment, according to Forbes.
The risk of eavesdropping through a regular household light bulbs called scientists from the University named after Ben-Gurion (Israel) and Weizmann Institute (Israel). For effective espionage hackers need special equipment and magnifying device, such as a telescope. Attackers point a telescope at located in house the bulb, and can read and write the conversation in the room of people.
The method is based on sensing vibrations in air pressure on the surface of the bulb, which creates a human speech or other sounds. Collect the signal recovers, decodes and translates into the sound a special algorithm Lamphone. In the experiment the researchers were able to accurately recognize human speech at a distance of 25 meters from the object to the subject of surveillance. When you use a telescope or other similar equipment, this distance can be increased.
Scientists noticed that this method of espionage is fairly expensive, though its use need not only special knowledge but also special equipment worth about $ 1,000. Also the wire will be ineffective if there is no direct visual contact between the telescope and the lamp — for example, when the curtained Windows.
Video, photo All from Russia.