{TAIL ~ Communication} with {HEAD ~ the ESLs} is accomplished using communication base stations 206A and 206B and reading of the RFID tags is accomplished using portable RFID readers 208A and 208B 
{ TAIL ~ Communication } with { HEAD ~ the ESLs } is accomplished using communication base stations 206A and 206B and reading of the RFID tags is accomplished using portable RFID readers 208A and 208B
TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH