In a preferred embodiment, the present invention comprises an authentication engine, an authentication host, and a plurality of providers coupled to the host, {HEAD ~ each provider} implementing {TAIL ~ a selected authentication scheme} 
implementing
In a preferred embodiment , the present invention comprises an authentication engine , an authentication host , and a plurality of providers coupled to the host , { HEAD ~ each provider } implementing { TAIL ~ a selected authentication scheme }
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 HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL