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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: 0.197s | 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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pessimizer ◴[04 Sep 25 18:37 UTC] No.45130689[source]▶
Sound can certainly be dangerous to you.
replies(1): >>45131041 #
1. ceejayoz ◴[04 Sep 25 19:08 UTC] No.45131041[source]▶
So can water. That doesn't make it inherently dangerous in all amounts.