The portable payment terminal or the stationary base terminal include means for storing {HEAD ~ the binary messages} and means for deactivating {TAIL ~ the central unit} such that the radio transmit receive module is operable only when the central unit is deactivated 
The portable payment terminal or the stationary base terminal include means for storing { HEAD ~ the binary messages } and means for deactivating { TAIL ~ the central unit } such that the radio transmit receive module is operable only when the central unit is deactivated
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH