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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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does that mean a passive observer can do all that observations? and that a raspberry pi, with its single average antenna is capable of this?
It may be possible, but I have no clue. It may also be, that the position of the router and the Laptop is important, but that's probably something you would have to test.