===== MISC =====

  * http://talk.maemo.org/showthread.php?p=1358181#post1358181
  * http://www.scribd.com/doc/38691374/Quaternion-Based-Extended-Kalman-Filter-for-Determining-Orientation-by-Inertial-and-Magnetic-Sensing
  * http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3231259/
  * https://github.com/schollz/find# WiFi


===== MORE =====

@TaG: GpS MaP WorlD SensoR