FIG 20 is {HEAD ~ a flowchart} illustrating a process for {TAIL ~ a reader} authenticating a tag according to embodiments 
FIG 20 is { HEAD ~ a flowchart } illustrating a process for { TAIL ~ a reader } authenticating a tag according to embodiments
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH