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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: 0s | source
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hollerith ◴[04 Sep 25 17:18 UTC] No.45129694[source]▶
WiFi equipment can see your heart beating, but don't worry, it cannot possibly have any harmful effects on human physiology.
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ch4s3 ◴[04 Sep 25 17:47 UTC] No.45130057[source]▶
A sonogram can see your heart beating too, but no one thinks sonograms are dangerous(because they are not).
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1. elric ◴[04 Sep 25 19:26 UTC] No.45131250[source]▶
Ultrasound can be used to blast tumours or break kidney stones. And according to Wikipedia there seems to be a really weird correlation between having an ultrasound and being lefthanded. But that sounds almost too ridiculous to be true.