title: Sensor fusion implemented on Android?
body: <p>I listened to this talk:
  <a href="http://www.youtube.com/watch?v=C7JQ7Rpwn2k" rel="noreferrer">http://www.youtube.com/watch?v=C7JQ7Rpwn2k</a></p>
  
  <p>which is Invensense Inc prototyping their "Sensor fusion" system, which is where they combine gyro, accelerometer, compass measurements in Android, to get better results.</p>
  
  <p>Is this currently implemented in any version of Android? The reason I ask is, part of sensor fusion is the "Gravity" sensor and the "Linear Acceleration" sensor, which ARE implemented in Android ever since API Level 9... makes me think that either
  1) sensor fusion is implemented
  2) sensor fusion is not implemented, but these are just added into Android API in anticipation of widespread added sensorfusion implementation in the future.</p>
  
  <p>Does anyone know?</p>
  
  <p>Thanks</p>