A biometric and cryptographic processing unit includes {TAIL ~ a biometric receiver} receiving {HEAD ~ biometric information} of a BCU user 
A biometric and cryptographic processing unit includes { TAIL ~ a biometric receiver } receiving { HEAD ~ biometric information } of a BCU user
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH