Have you tried 'see through walls with wifi' via duckduckgo? [1] https://spectrum.ieee.org/see-through-walls-by-the-glow-of-your-wifi https://spectrum.ieee.org

Have you tried 'see through walls with wifi' via duckduckgo? [1] https://spectrum.ieee.org/see-through-walls-by-the-glow-of-your-wifi https://spectrum.ieee.org/see-through-walls-by-the-glow-of-y... [2] https://spectrum.ieee.org/household-radar-can-see-through-walls-and-knows-how-youre-feeling https://spectrum.ieee.org/household-radar-can-see-through-wa... [3] https://hackaday.com/2018/07/02/using-an-ai-and-wifi-to-see-through-walls/ https://hackaday.com/2018/07/02/using-an-ai-and-wifi-to-see-... [4] https://www.csoonline.com/article/2222896/stealthy-wi-fi-spy-sees-you-through-walls-thanks-to-your-wireless-router.html https://www.csoonline.com/article/2222896/stealthy-wi-fi-spy... [5] https://www.media.mit.edu/publications/see-through-walls-with-wifi/ https://www.media.mit.edu/publications/see-through-walls-wit... [6] https://dl.acm.org/doi/10.1145/2486001.2486039 https://dl.acm.org/doi/10.1145/2486001.2486039 and so forth... Maybe not from the base stations, but from equipment within the rooms. Also probably not on all used frequencies, because the higher they are, the less penetrating of walls, or even glass. On the other hand, the timing is much more exact. With that much more precise timing [7] https://en.wikipedia.org/wiki/Stealth_technology#Radar_stealth_countermeasures_and_limits https://en.wikipedia.org/wiki/Stealth_technology#Radar_steal... & [8] https://en.wikipedia.org/wiki/Multistatic_radar https://en.wikipedia.org/wiki/Multistatic_radar & [9] https://en.wikipedia.org/wiki/Passive_radar https://en.wikipedia.org/wiki/Passive_radar in the general context of [10] https://en.wikipedia.org/wiki/Cognitive_radio https://en.wikipedia.org/wiki/Cognitive_radio comes to mind.