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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Good answer, George. The question applies
mainly to delegated identifiers (e.g., email addresses delegated under a
specific DNS domain like user@aol.com, third-or-lower level domain names like
user.aol.com, or community i-names such as @aol*user), since they are by
definition assigned within the context of (and thus under the ultimate control
of) as specific identifier community (such as aol.com). <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> </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'>For identifiers registered directly with a
global registry (e.g., joesmith.com in DNS or =joe.smith in XRI), the identifiers
themselves are portable across registrars and the registrant has direct control
of the identifier and what it resolves to (e.g., the XRDS document).This portability
is established by ICANN for DNS registries and XDI.org for XRI global
registries.<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> </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 the section of the spec you cite should
probably be clarified with regard to these points, i.e., something like: <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> </o:p></span></font></p>
<pre><font size=2 color=black face="Courier New"><span style='font-size:10.0pt'>"OpenID is decentralized. No central authority must approve or register Relying Parties or OpenID Providers. An End User can freely choose which OpenID Provider to use. OpenID design also enables an End User to continue to use an OpenID Identifier if they switch OpenID Providers. Note that the portability and persistence of an OpenID identifier itself (URL or XRI) is a capability of the identifier and the registry authority and is out of scope for OpenID. End Users who wish to maintain persistent control of an OpenID Identifier SHOULD select an identifier and registry authority that offers these capabilities.”<o:p></o:p></span></font></pre>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><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'>Thoughts?<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> </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 <o:p></o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:windowtext'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> specs-bounces@openid.net [mailto:specs-bounces@openid.net] <b><span
style='font-weight:bold'>On Behalf Of </span></b>George Fletcher<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, October 31, 2006
7:36 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Stefan Görling<br>
<b><span style='font-weight:bold'>Cc:</span></b> specs@openid.net<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: Making identities
persistent?</span></font><font color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Helvetica><span
style='font-size:12.0pt;font-family:Helvetica'>This is a good use case and I
think important for both users and IdPs (now OPs [OpenID Provider] per the
latest "editor's conference") to consider.<br>
<br>
I see a number of options...<br>
<br>
1. There has been some discussion regarding a "change identifier"
extension that would allow you to change your identifier at the relying
party. This would solve the use case and is necessary regardless of the
other options.<br>
<br>
2. The OP (in this case AOL.com) could continue to provide an "identifier
management" page that would allow the user to specify the OP of
choice. This requires the OP to continue to serve the XRDS doc or at
least the indirection to a XRDS doc with the new OP. This is not that
much extra overhead for the OP, but it will likely be a business decision as to
whether to support such a feature.<br>
<br>
3. The user gets to choose their OP so they can ensure that they don't get
"locked in". This is the ideal behind user-centric.
However, in practice, it will take good education and time for users to
understand the ramifications of their decisions.<br>
<br>
Thanks,<br>
George<br>
</span></font><br>
Stefan Görling wrote: <o:p></o:p></p>
<pre wrap=""><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'>Hi everybody,<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>I'm trying to get a grip around your great work and have one issue that <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>I'm not quite clear on, relevant to the discussion of using <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><a
href="mailto:user@example.com-style">user@example.com-style</a> identifiers, but also in a more general context. <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Please let me know if I've simply missunderstood my own question.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><a
href="http://openid.net/specs/openid-authentication-2_0-09.html#anchor48">http://openid.net/specs/openid-authentication-2_0-09.html#anchor48</a> says:<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>"OpenID is decentralized. No central authority must approve or register <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Relying Parties or Identity Providers. An End User can freely choose <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>which Identity Provider to use. They can preserve their Identifier if <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>they switch Identity Providers."<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Let us consider the case that I'm an AOL.com customer, and they act as <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>an IdP providing we with an identifier. I use this identifier for 3 <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>years for identity management on most of the services I use, due to the <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>huge success of the standard... However, I'm starting to get fed up with <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>AOL and terminates my agreement with them. Is there any procedure for me <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>to switch to another IdP? How is this done?<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Best Regards,<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Stefan Görling<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>_______________________________________________<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>specs mailing list<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><a
href="mailto:specs@openid.net">specs@openid.net</a><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><a
href="http://openid.net/mailman/listinfo/specs">http://openid.net/mailman/listinfo/specs</a><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'> <o:p></o:p></span></font></pre></div>
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