For example, {HEAD ~ at least one end portion} of {TAIL ~ the PAN}, which includes the BIN or bank identification number, remains static during the transaction process and at least the middle portion is changed or encrypted 
of
For example , { HEAD ~ at least one end portion } of { TAIL ~ the PAN } , which includes the BIN or bank identification number , remains static during the transaction process and at least the middle portion is changed or encrypted
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH