a processor operatively connected a memory, the processor being configured to establish a wireless connection between the first and second wireless communications devices and to cause {HEAD ~ a radiofrequency transmitter} to transmit the current position data of the first wireless communications device to {TAIL ~ the second wireless communications device}, 
a processor operatively connected a memory , the processor being configured to establish a wireless connection between the first and second wireless communications devices and to cause { HEAD ~ a radiofrequency transmitter } to transmit the current position data of the first wireless communications device to { TAIL ~ the second wireless communications device } ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH