this post was submitted on 24 May 2026
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Ordinary WiFi can now identify people with near perfect accuracy (www.sciencedaily.com)
submitted 1 day ago by Zephorah@discuss.online to c/technology@lemmy.world
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The reason the FCC is only allowing the sale of state approved routers in the US?

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[–] LovableSidekick@lemmy.world 1 points 14 hours ago* (last edited 14 hours ago)

The need for a constant signal to scan movement is a good point. Makes sense that nearby wifi devices can't just be sitting there, they have to be actively transmitting to the router or there's no signal for the target to interfere with. I must have gotten CSI and wifi scanning confused. Tbh I'm not even sure why CSI is in the article except for history, but I found the principle fascinating. In your research did you turn the intererence into anything like a heat map of a person standing in the room, or is it more of a signal fingerprint, like chromatography or spectrography?