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<div class=Section1>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Tony,<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>So if I understand this (fascinating)
scenario, what you&#8217;re really talking about is the capability for any site
A to dynamically begin serving as a &#8220;proxy&#8221; IdP for a user to
another trusted site B, simply by issuing a URL for accessing site B that
points back to site A as the OpenID IdP.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Do I have that right?<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>If so, that&#8217;s both really cool, and &#8211;
possibly &#8211; a little scary, because the user may not expect/want site A to
act in that proxy IdP capacity.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>What do folks think?<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>=Drummond (i-name: =drummond.reed,
http://xri.net/=drummond.reed) <o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

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face="Times New Roman"><span style='font-size:12.0pt'>

<hr size=2 width="100%" align=center tabindex=-1>

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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
yadis-bounces@lists.danga.com [mailto:yadis-bounces@lists.danga.com] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Tony<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, August 24, 2006
1:21 AM<br>
<b><span style='font-weight:bold'>To:</span></b> yadis@lists.danga.com<br>
<b><span style='font-weight:bold'>Subject:</span></b> Seamless site-to-site
account creation and login via OpenID</span></font><o:p></o:p></p>

</div>

<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Thus far I've only read about OpenID and tried it out with some scant
services.&nbsp; However as far as I can tell, the process of creating an
account and logging in to a trusted &quot;partner&quot; site could be made
completely automated, correct? <br>
<br>
Example:<br>
<br>
User has an account on Web Site A.&nbsp; User logs into Site A and a session
cookie is set.<br>
<br>
User wants to access a service on Site B which is part of Site A's trusted
network of partner sites.<br>
<br>
User requests Site B's feature on Site A.&nbsp; Site A directs the user to Site
B, passing their OpenID XRI for Site A to Site B.<br>
<br>
Site B would then contact Site A based on the OpenID to verify User's
identity.&nbsp; Site B would then issue an HTTP redirect for the user to a
specially designed landing URL. <br>
<br>
When User's browser hits the landing URL, Site A checks the session cookie and
sets up the trust relationship with Site B.<br>
<br>
As far as I can tell, this can be 100% seamless and behind the scenes, provided
the user has 1) already logged into Site A and 2) Site A and B trust each other
enough to use OpenID in this manner. <br>
<br>
Correct, or am I missing something?<br>
<br>
Tony Arcieri<br>
ClickCaster.com<o:p></o:p></span></font></p>

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