Each Fitbit device includes a variety of hardware sensors that have been exposed through our Sensor APIs.
The purpose of these guides is to provide an introduction to these hardware sensors to allow developers to begin utilizing these powerful APIs with minimal effort. Guides are available for the following sensors:
Accelerometers can be used to measure device acceleration, and determine orientation.
A Barometer is used in meteorology to measure atmospheric pressure and forecast short term changes in the weather.
The Gyroscope sensor measures the device's angular velocity along 3 orthogonal axes (X, Y and Z).