FIG 2 illustrates a system 200 using a plurality of devices employing wireless communication using {HEAD ~ techniques} such as reflective backscatter to provide and receive {TAIL ~ information} 
FIG 2 illustrates a system 200 using a plurality of devices employing wireless communication using { HEAD ~ techniques } such as reflective backscatter to provide and receive { TAIL ~ information }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL