accelerometer
Indicates whether device has an accelerometer. Accelerometer returns acceleration including gravity in x, y and z axes. In this sensor gravity is always influencing the measured acceleration, for this reason, when the device is sitting on a table, the accelerometer reads a magnitude equal to the gravity. Likewise, when the device is in free-fall accelerating towards the ground, the accelerometer reads a magnitude of zero. This type of accelerometer applies bias corrections to returned measures. If no bias correction is required, use uncalibratedAccelerometerAvailable.