A biometric unit of the BCU has a store of {HEAD ~ biometric information} of {TAIL ~ an authorized BCU user} and compares received biometric information with the stored biometric information to determine if the user is an authorized BCU user 
A biometric unit of the BCU has a store of { HEAD ~ biometric information } of { TAIL ~ an authorized BCU user } and compares received biometric information with the stored biometric information to determine if the user is an authorized BCU user
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL 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