Wi-Fi & phone signals could be used to map your home – study

‘Scientists are now able to create an image of objects in remote spaces using only wireless internet and phone signals, according to new research that’s likely to alarm privacy advocates.
Researchers from the Technical University of Munich (TUM) created hologram images of an aluminum cross by bombarding it with microwave radiation from household Wi-Fi transmitters and measuring the distortions as the waves reflected off it. The result is a microwave hologram.
Writing in the journal Physical Review Letters, Friedemann Reinhard, the director of the Emmy Noether Research Group for Quantum Sensors at the Walter Schottky Institute of TUM, said: “Using this technology, we can generate a three-dimensional image of the space around the Wi-Fi transmitter, as if our eyes could see microwave radiation.”’
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