The financial transaction data, including the instruction codes and the authenticating data, are then transmitted from {HEAD ~ the phone} to {TAIL ~ the POS} 
The financial transaction data , including the instruction codes and the authenticating data , are then transmitted from { HEAD ~ the phone } to { TAIL ~ the POS }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL