The accuracy of wearables employing photoplethysmography (PPG)-based heart rate sensors may vary significantly between specific devices and activity types, but these sensors’ performances do not appear to be significantly affected by the skin tone of the wearer, according to a new study published in NPJ Digital Medicine.
The investigation, conducted by Duke University researchers among 53...
Garmin has been in the wearable business since at least 2003, but the company has only been in the highly competitive consumer fitness tracker market -- with its VivoSmart and VivoFit lines -- for a little under a year. And in that time, the company has only managed to capture between 10 and 15 percent of the market, according to their own estimates. Their fitness segment posted a sluggish 5...
Garmin Vivosmart
GPS navigation maker Garmin has announced a new activity tracker, called Garmin Vivosmart.
The device offers many of the same features included in one of Garmin's other activity tracker, called Vivofit, like heart rate tracking, step counting, sleep monitoring, and time spent doing various activities. But the new tracker is more of a smartwatch because it offers notifications...
