In addition to {TAIL ~ current position data}, the speed, path and time {HEAD ~ data facilitate tracking} of the first wireless communications device 
In addition to { TAIL ~ current position data } , the speed , path and time { HEAD ~ data facilitate tracking } of the first wireless communications device
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH