Wireless network can watch your breathing
www.newscientist.com/article/dn20971-wireless-network-can-watch-your-breathing.html
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Patwari concludes that the wireless signals bent around his chest as it rose with each inhalation, causing them to travel a longer distance and decrease slightly in power.