Seeing through walls, not a problem if you have WIFI

Throughout time, the thought (still today) sounds pretty Sci-Fi. As a person living in the 21st century you should get used to it because researchers at University College London have found a way to see through walls.  A device which contains 2 antennas is capable of seeing through walls by using a WIFI frequency. This is ground breaking work as the signal is undetectable because it  does not use radio signals. Want to buy one? Well you have to wait a few years as the UK Ministry of Defense has still to determine if its usable for combat use.

Source: PopSci

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