I have an older house (1950s) and I'd really like to see behind my walls without physically excavating so I can try to run some wires without encountering surprise obstructions. There are tools which use WifI to do detect humans[1] (https://www.tomshardware.com/news/wi-fi-routers-used-to-dete...) [2](https://news.ycombinator.com/item?id=40897828) but I'm looking for a way to use Wifi for more general imaging. There's a paper from 2017 ("Holography of WiFi Radiation)[https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.11...] and many other scholarly papers about object detection via WiFi, but I haven't been able to find any off-the-shelf products/projects that would just build a 3D environmental density map without any object detection. The resolution doesn't have to be great - not looking for millimeter scale features e.g. structural weakness. Is there anything out there that comes close? Given recent archaeological uses of drone LIDAR and satellite tomography, I figure the software for interpreting this kind of data should be pretty robust by now, just maybe it hasn't filtered down to the consumer market.