{TAIL ~ This decentralized procedure} allows new users {HEAD ~ access} to the network without having to physically access a centralized facility to present their credentials 
{ TAIL ~ This decentralized procedure } allows new users { HEAD ~ access } to the network without having to physically access a centralized facility to present their credentials
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH