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WiFi signals can measure heart rate—no wearables needed
(news.ucsc.edu)
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this post was submitted on 04 Sep 2025
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the problem is that you don't need 20 people for this kind of thing. you can just kinda passively slurp the data up from every router and throw it into a machine learning model to be used by cops or sold to advertisers. you don't need a human in the loop anywhere and it's essentially impossible to opt out of