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I like this  -- it's simple, and it keeps the semantics up to the RP, which is really what it should be. The IdP is free to ignore this value (which should be stated explicitly).
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<div> -- Justin</div>
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<div>On Aug 29, 2012, at 2:25 PM, George Fletcher wrote:</div>
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<div bgcolor="#FFFFFF" text="#000000"><font face="Helvetica, Arial, sans-serif">How about adding the following to section 2.1.2 of Messages... after the id_token parameter<br>
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login_id<br>
    OPTIONAL. A hint to the authorization service as to the login_id the user may use to authenticate (if necessary). This hint can be used by an RP if it first asks the user for their email address (or other identifier) and then wants to pass that value as
 a hint to the discovered authorization service.<br>
<br>
Thanks,<br>
George<br>
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<div class="moz-cite-prefix">On 8/29/12 2:00 PM, Nat Sakimura wrote:<br>
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<div>Hey, now I am getting the support! </div>
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<div>Could one of you provide the actual text proposal for it? <br>
<br>
=nat via iPhone</div>
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On Aug 30, 2012, at 1:40 AM, Chuck Mortimore <<a moz-do-not-send="true" href="mailto:cmortimore@salesforce.com">cmortimore@salesforce.com</a>> wrote:<br>
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<div>+1 <br>
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- cmort</div>
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On Aug 29, 2012, at 9:26 AM, "Pam Dingle" <<a moz-do-not-send="true" href="mailto:pdingle@pingidentity.com">pdingle@pingidentity.com</a>> wrote:<br>
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<div>+1 from me too - need this for account chooser, among other things.<br>
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<div class="gmail_quote">On Wed, Aug 29, 2012 at 8:39 AM, Richer, Justin P. <span dir="ltr">
<<a moz-do-not-send="true" href="mailto:jricher@mitre.org" target="_blank">jricher@mitre.org</a>></span> wrote:<br>
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<div style="word-wrap:break-word">+1, I've asked for this feature too.
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<div> -- Justin</div>
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<div>On Aug 29, 2012, at 11:27 AM, George Fletcher wrote:</div>
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<div bgcolor="#FFFFFF" text="#000000"><font face="Helvetica, Arial, sans-serif">Hi,<br>
<br>
We've run into a case where it would be nice to be able to pass into the /authorize endpoint a value to pre-fill the loginid field on the authentication UI. We allow for an id_token to be passed as a hint of the desired user, but this only works for an "already
 authenticated" use case.<br>
<br>
If we consider the Account Chooser case where what is stored is the user's email address, it would be nice to be able to start the identity federation flow passing that email address along to the IdP.
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<br>
Did I just miss support for this in the specs?<br>
<br>
Thanks,<br>
George<br>
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<pre cols="72">-- 
Chief Architect                   AIM:  gffletch
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