The NBA, which hopes to restart the …

The NBA, which hopes to restart the season July 30, says it is offering players a ring whose maker claims it can track a user’s health data and might even predict if users are about to show symptoms of coronavirus infection. But there’s not much information yet on how well the device, which has embedded electronics, works. The $299 Oura ring is designed to monitor sleep, pulse, movement, heart activity and temperature, according to the company’s website.