title: Does your Android Compass hardware work while driving or beeing in a train?
body: <p>I have a Desire Z and when moving to fast the compass hardware starts to return totally wrong values. Its probably the hardware which can't measure correctly when moving to fast but i want to know if all devices have this problem. </p>
  
  <p>You can try it with your own phone by installing any compass app (don't use Google Maps cause they switch automatically to GPS-compass-mode when moving). 
  I need to know this because for Augmented Reality applications its still relevant to know where the user is looking when being in a train/car.</p>