{HEAD ~ An RFID transponder} 100 can typically only send a response wireless communication 421 in reply to a transmission 420 from {TAIL ~ an RFID reader} 200 
{ HEAD ~ An RFID transponder } 100 can typically only send a response wireless communication 421 in reply to a transmission 420 from { TAIL ~ an RFID reader } 200
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH