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WiFi signals can measure heart rate

(news.ucsc.edu)
463 points bookofjoe | 1 comments | 04 Sep 25 14:53 UTC | HN request time: 0.204s | source
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supernova87a ◴[04 Sep 25 20:25 UTC] No.45131847[source]▶
Hey, I heard about how utility pole inspecting helicopters are able to tell the good/rotten state of wooden telephone poles by the reverb pattern of sound waves coming off the poles from the rotors -- it seems to me the whole field of non-invasive sensing (and using existing/ambient emission sources) is getting pretty impressive.
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1. bri3d ◴[04 Sep 25 21:59 UTC] No.45132699[source]▶
Source article (2001!): https://electricenergyonline.com/energy/magazine/4/article/n...

I can’t tell if this ever became a reality; I know of more modern approaches attempting to use thermal and multi spectral imaging to achieve the same goal.