The WLAN can turn to radar that sees through walls.

There are two versions of radars. The regular radars that radio pulses reflect from surfaces. And that thing makes radar possible to see targets through the clouds and fog. That is regular scanning radar. Another version of radars is the "X-ray radar". The "X-ray radar" uses radio waves similar way as X-ray systems use X-rays. The radio transmitter can be on another side of the house.

Then the system transmits radio waves that travel through the house. The receiver is on the opposite side of the target. So this kind of thing can be the radio-frequency X-ray machine. This kind of system works with extremely high accuracy. If we think about texts on paper. The reason why that radar system can read it is that ink is a different material than paper.

The system uses the differences in thickness of ink and paper. The same system can read files from the computer's screen. The reason for that is that the energy level in the air that is in front of the screen is lower in the points of black letters. If the system is accurate enough, that thing is possible. That thing allows those systems to read things without disturbing targets at all.

The WLAN system makes it possible to create a system that can be used in this role. The WLAN signals are also radio signals. The radar system can use those signals to detect things like hidden weapons in the house. That kind of mission is impressive. And this kind of system can be the next-generation world for the military.

https://www.tomshardware.com/news/demo-shows-how-wi-fi-can-read-through-walls

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