This is particularly useful if the user of the machine does not have {TAIL ~ a user identifying information} suitable for {HEAD ~ authentication} 
This is particularly useful if the user of the machine does not have { TAIL ~ a user identifying information } suitable for { HEAD ~ authentication }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD