title: How can I get user's walking direction using sensor fusion?
body: <p>I am working on an Android app and I am trying to figure out how can I combine accelerometer and magnetometer to find the walking direction of the user when indoors. I understand that I can only get an approximate direction and not the real value. :)</p>
  
  <p>Any ideas? Would gyroscope also help in this case?</p>
  
  <p>Thanks</p>