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