Several companies produce sports eyewear that provides data, including speed and altitude, heart rate and time per mile, but critics say the devices create a distraction that could be dangerous.
By MATT RICHTEL, New York Times
Sun, 04/21/2013 - 4:20pm
Several companies produce sports eyewear that provides data, including speed and altitude, heart rate and time per mile, but critics say the devices create a distraction that could be dangerous.