title: Raw sensor data in Android devices
body: <p><a href="http://developer.android.com/guide/topics/sensors/sensors_overview.html" rel="nofollow">Here</a> it looks like the Android Platform can provide raw measurement data. But I have read somewhere else that actually at the chip level (e.g. InvenSense chips) some data fusion algorithms are being carried out. </p>
  
  <p>So how to know whether these outputs from the Android API's have already passed a data fusion algorithm or not? By data fusion we refer to the regular Kalman Filter or Complimentary Filter, or any other similar algorithm, which might possibly be proprietary.</p>