Using Wifi To See Through Walls

I’m sure this has been out for decades, but now it has just made it into the public domain:

Drones use wi-fi for 3D mapping to ‘see’ through walls

The University of California is using wi-fi enabled drones to create a system of 3D imaging which could potentially allow them to “see” through walls.

The technique, which involves two drones working in tandem, could have a variety of applications, such as emergency search-and-rescue, archaeological discovery and structural monitoring.

My guess is, if you can see an object’s position inside a room from outside using some element of the electromagnetic spectrum, then if you can electronically detect and remove wavelength-sized vibrations on the emitter and receiver (and that is just a mechanical issue) then you can detect and calculate the wavelength sized vibrations of various objects inside the room, potentially allowing you to listen as well as watch.

This raises the question of what the Fourth Amendment protects, namely does it just address evidence entered into a criminal court, or does it guarantee a broader right to privacy from government observation with no criminal investigation purpose?

Technically you need a warrant to place a listening device in a private location or put a camera in a private place, if you want to introduce that material into a legal proceeding. But what if you can’t get a warrant, and you want to listen but you have no desire to use what you hear in court?

Even more interesting, is a warrant still needed to use remote monitoring from within public boundaries, especially if the material gathered has no evidentiary value? Or does the ability to listen with all equipment placed in a public place, or your own private property, remove the status of the conversation as private, and make it public? Or will this technology remove any expectation of privacy, everywhere, removing any need for a warrant on any recording taken anywhere?

I see a very dystopian future, where we all deploy these technologies on each other because everyone is deploying them on us, once they are democratized and made widely available. A place where we violate each other’s privacy, and unless the law addresses it, nobody can do anything about it. Then, as yang in its most extreme turns into yin, I would see a conflagration, ending with everyone agreeing on the importance of privacy, and a return to the original state.

Spread r/K Theory, because nothing is heading to an endpoint, it is merely traveling along the path of the cycle