[Zope3-Users] Customized authentication

[Reinhold Strobl]

Hi,

I have a question on authentication. Philipp von Weitershausen stated in his
book "Web component development with Zope3", that requesting and retrieving
credentials from the user is done by an adapter. This component adapts the
request to the ILoginPassword interface. 

But my question is, how could I support other forms of credentials like PK,
which do not necessary include a password. Is there a more generic interface
than ILoginPassword?

Thanks a lot in advance!