Last I heard, this seeing people with Wifi was very poor resolution and filled with noise but worst of all, the system had to be trained on the specific rooms it was being used on so you couldn't apply it secretly.
Last I heard, this seeing people with Wifi was very poor resolution and filled with noise but worst of all, the system had to be trained on the specific rooms it was being used on so you couldn't apply it secretly.
Second seems to be that the tech is uncommon and has poor resolution.
^ this is true with the first digital cameras as well.
As the MIT researchers first publishing their work on this know, the minimumly viable tech needed to use wifi to passively see observe each breath someone takes is 5% hardware and 95% software. We aren’t talking about cutting edge tech. We are taking about commonly available tech that is just used to observe distortions in the 3d radio propagation geometries.
The actual hardware required to see exactly where someone is behind walls and what their hands are doing costs less than $300. Most of it is software needed to reconstruct the geometry from the signals. Software like this is notorious for being randomly and abruptly open sourced.
You can also see if someone's breathing by noticing condensation on their windows in winter or seeing them enter their house one day and come out another day. They must have spent the intervening time inside breathing. If that's the level of invasion, it hardly matters.
Until we don't.
RIP Jon Lang. https://m.youtube.com/watch?v=wsFBeetiYMs
Cellphone jammers are probably a clearer example of cheap tech that can be used covertly but it's illegal and people usually don't.
Another important factor is that they aren't scalable because it takes a human a lot of work to hack only extremely local targets, not a program that can scan computers all over the world automatically.