{HEAD ~ The System} sends {TAIL ~ a number} that must be incorporated into the response from a valid Authentication Chip 
sends
{ HEAD ~ The System } sends { TAIL ~ a number } that must be incorporated into the response from a valid Authentication Chip
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