A profile of smart ring maker Oura, which was founded in 2013 in Oulu, Finland and has grown to a $5.2B company by focusing on overall health than fitness alone (Christopher Mims/Wall Street Journal)

Christopher Mims / Wall Street Journal:
A profile of smart ring maker Oura, which was founded in 2013 in Oulu, Finland and has grown to a $5.2B company by focusing on overall health than fitness alone  —  Headquartered 5,000 miles from Silicon Valley, Oura’s smart ring measures heart health and can predict when you may be getting sick