The card contains {TAIL ~ a memory} for storing {HEAD ~ PIN data} of a predetermined number of characters 
The card contains { TAIL ~ a memory } for storing { HEAD ~ PIN data } of a predetermined number of characters
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH