My concern with this is that OIDC can get away with defining this 
multi-language structure because it defines the mechanism once (in Messages) 
and applies it to all user-readable strings throughout the whole application 
protocol, of which there are several. Do we really want to pull in that whole 
structure and mechanism for one field in client registration? I really don't 
think it should be something that's defined completely inside of DynReg for a 
corner case for a single field, but I also doubt we want to normatively point 
to OIDC Messages for this solution either.

There are also other ways to do this: Webfinger [1] for instance uses JSON 
structures to give language tags to field values, and has a default mechanism:

   { "en_us": "my client", … }

The fundamental question is  this: should a client be able to register multiple 
names (in different locales) with a single client_id, or should it get a 
different client_id for each display language set?

 -- Justin

[1] http://tools.ietf.org/html/draft-ietf-appsawg-webfinger-11

On Mar 11, 2013, at 5:54 PM, John Bradley 
<[email protected]<mailto:[email protected]>>
 wrote:

That is what I was thinking.   It would be up to the AS to determine what 
language and script to present based on the user preference.

While a large number of clients will be native and might be able to customize 
themselves for a single user during registration , we don't want to forget the 
web server clients that are multi user.

On 2013-03-11, at 10:49 PM, Brian Campbell 
<[email protected]<mailto:[email protected]>> wrote:

FWIW, the closely related OpenID Connect client registration draft does have 
some support for doing this, which could maybe be borrowed. See client_name in 
§2 at 
http://openid.net/specs/openid-connect-registration-1_0-15.html#client-metadata 
and the examples.


   "client_name": "My Example",
   "client_name#ja-Jpan-JP":"クライアント名",



On Mon, Mar 11, 2013 at 5:15 PM, Richer, Justin P. 
<[email protected]<mailto:[email protected]>> wrote:
It was brought up at the in-person meeting today that we'll want to consider 
issues around internationalization and localization of human-readable fields 
like client_name in the client registration. Which is to say: if a client 
supports ten languages and wants to present itself in ten languages, should it 
have to register itself ten times with an AS?

At the moment, I'm of the opinion a client with ten languages could register 
itself ten times, or do something with the context in which it runs to 
determine which human-facing language to use. Keep in mind that in some cases 
(such as native clients), you'll be dynamically registering a client for each 
user, in effect. In other words, I personally think that this is a rathole that 
will cause more harm than good.

 -- Justin
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