There is nothing new about eavesdropping based purely on sound waves without the use of microphones. But up until now, these methods have all had their disadvantages. They could not be conducted in real-time. Some devices had to be programmed with malware. Or a laser beam had to be activated. Scientists at Ben-Gurion of the Negev University in Israel have now developed a novel method that does not require any of these tools. All it takes is an ordinary lamp. This lamp can be used to listen in on audio without the need for any modifications.
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