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