Any reason this wouldn't work with cell towers?
this post was submitted on 24 May 2026
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I think the main advantage with the wifi-based approaches is that they are usually used in a relatively static/calm indoor environment with a stable channel response and your motions are disturbing that, compared to a quickly changing outdoor environment (e.g. a city) where it would be much harder to distinguish individuals. Also, you are typically closer to the access points, making the power/SNR higher. Regarding mobile communication though, the trend is towards higher frequencies and smaller cell sizes which also give greater spatial resolution (and higher power) and some funky near-field effects can be used to get beam forming on crack: https://arxiv.org/abs/2407.10147 So perhaps it could work even better, wouldn't be surprised
I imagine resolution decreases with range
Edit: resolution not revolution
Revolution should increase the closer you get to a billionaire.
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Comcast Is watching you masturbate. Awesome.
I mean, they kinda already were.
Especially if they've been opening all those videos I've sent
Building codes should probably include Faraday-cage type shielding.
That would prevent cell signals from inside, making it harder to (e.g.) call the fire department, or an ambulance.
the return of landlines is nigh
Honestly, we'd be better off at this point.
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may soon be able to
That means "yesterday's spy tech" that now they will leak to public, because they have a way better way.
I'm not sure of the current state of my tinfoil hat.
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How do they identify a particular person though? I get you could see people as present or not or moving around the room, but it's insane that they would be able to tell facial features etc.
A paper from around a decade ago talked about using WiFi to identify key strokes so with large data models we have today I would assume they could get pretty good fidelity on a person. Maybe not enough for “beyond a reasonable doubt” but probably enough where your WiFi company is selling your data on what you do at home
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Comcast routers already have a feature to detect people's presence.
There is a project I can't find now which uses an esp32 to create a presence detection system that integrates with home assistant and it uses wifi.
I know of ESPresense, but that only tracks your phone, not your body..
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The Dark Knight tech was a lot closer than we realized in 2008.
It‘s like the phone sonar tech from the Dark Knight everyone said was total BS but totally real…