The j2eeLib.getAuthenticationType() system function identifies the J2EE authentication method used for the current JSF Web application. If no such authentication is in use, this function returns an empty string.
j2eeLib.getAuthenticationType() is available only in JSF handlers.
j2eeLib.getAuthenticationType() returns (authenticationMethod STRING)
For background details on authentication methods, see the documentation for your Web application server.