An authentication component may receive credential information for authentication of a user or a device for {HEAD ~ access} to {TAIL ~ a resource} 
An authentication component may receive credential information for authentication of a user or a device for { HEAD ~ access } to { TAIL ~ a resource }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL