Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness ...

He takes a Bluetooth LE fitness tracker dongle and reflashes it spit out the raw accelerometer data and trigger events. He then wrote a phone app that receives the data and uses the device as an ...

Fitness trackers seem to work like magic ... Step counts are measured using an accelerometer, a sensor that can detect movement in all three directions – up and down, side-to-side and back ...

It has all the basic features you might expect in a fitness tracker: a heart-rate monitor, an accelerometer, light water resistance, and Bluetooth compatibility. Keep in mind that you’ll need a ...

Of note was that this idea for an accelerometer-based activity tracker ... These days Fitbit is hardly the only game in town for fitness trackers, but you can definitely blame them for laying ...

While most modern fitness trackers use accelerometer-based algorithms to account for rapid movements, motion artifacts can still affect their tracking accuracy. Rapid movements can decrease the ...