Map/Normalize Email Address to IdP/OP URL (Was [PROPOSAL] Handle "http://user at example.com" Style Identifiers)

[Rowan Kerr]

On 11/9/06, David Fuelling <sappenin at gmail.com> wrote:
> So, 'xyzzy at any.edu' would be treated as if the User had entered
> 'http://any.edu' (the URL of their IdP/OP) into the OpenId login form.

I don't like the idea of telling people to enter their username, and
then throwing it away. As mentioned below, user at domain can map to a
valid http url. This really, I suppose, is a matter of choice on the
part of an IdP as to what sorts of instructions they give to their
users about identifying themselves to RPs.

Verisign's PIP does userx.pip.verisign.com
Somone might do example.com/user/x
Someone else might do user at example.com

Discovery would be performed identically on all the above ... and
we're left with a problem of user education.

-Rowan