In some embodiments, two or more of {HEAD ~ the codes} retrieved by {TAIL ~ the reader} are backscattered by the tag as a combination, as described above 
retrieved by
In some embodiments , two or more of { HEAD ~ the codes } retrieved by { TAIL ~ the reader } are backscattered by the tag as a combination , as described above
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH