Preferably, but not necessarily, said {HEAD ~ biometric sensors} may include one or more of a fingerprint reading device, {TAIL ~ an iris} scanning device, a facial recognition device, a voice recognition device, a handprint scanning device, a blood circulation recognition device, a heartbeat monitor, and DNA reading apparatus 
Preferably , but not necessarily , said { HEAD ~ biometric sensors } may include one or more of a fingerprint reading device , { TAIL ~ an iris } scanning device , a facial recognition device , a voice recognition device , a handprint scanning device , a blood circulation recognition device , a heartbeat monitor , and DNA reading apparatus
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH