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WiFi signals can measure heart rate—no wearables needed
(news.ucsc.edu)
This is a most excellent place for technology news and articles.
Wifi sognals can read my heart rate, and be used to track me around my house. But I still can't get a signal in my room one floor up from the router.
This is the key point - these have to be clear signals in the same room.
Hence wifi 7.
Care to elaborate?
Faster speeds, better connection, requires higher AP density.