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