The location and {TAIL ~ orientation} of the device relative to the origin and {HEAD ~ initial orientation} is derived based on the movement data 
The location and { TAIL ~ orientation } of the device relative to the origin and { HEAD ~ initial orientation } is derived based on the movement data
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH