I'd like to propose the addition of two more optional parameters to this 
extension:

instance_name
   Short, human-readable name that the server SHOULD display to 
   the end-user along with the client name. This name is designed 
   to reflect a per-instance identifier for cases where a single user 
   may authorize multiple copies of a single identified client. The 
   server MAY [SHOULD?] store this information along with its 
   associated access grant to allow the end-user to differentiate 
   between instances of the application in the future (for example,
   to revoke access tokens).

instance_description
   A longer, human-readable description that the server MAY display to 
   the end-user along with the client name. This description  is designed 
   as the name above to reflect a per-instance identifier for cases where 
   a single user may authorize multiple copies of a single identified client. 
The 
   server MAY [SHOULD?] store this information along with its 
   associated access grant to allow the end-user to differentiate 
   between instances of the application in the future (for example,
   to revoke access tokens). If a client presents the instance_description,
   it MUST also present an instance_name.

This can be thought of as the new way of Google's xoauth_display_name 
parameter. We have a direct use case for this, and it seems like it would fit 
in the UX more than its own extension.

There was also talk of sending a client-information URL to get more stuff about 
the client and instances of it, but that seems a better fit for the impending 
discovery spec, to me, as it seems to address full client information and not 
per-instance information that this is talking about.

 -- Justin
________________________________________
From: oauth-boun...@ietf.org [oauth-boun...@ietf.org] On Behalf Of David 
Recordon [record...@gmail.com]
Sent: Monday, July 12, 2010 3:51 PM
To: OAuth WG
Subject: [OAUTH-WG] Moving the User Experience Extension draft forward

I wrote this draft last month based on discussions on the mailing list, the 
OpenID user experience extension (which Facebook, Google, and Yahoo! have 
deployed), and some OAuth 2.0 implementation experience from Facebook. It 
defines language and display preferences which the client can include in 
requests to the end-user authorization endpoint.

A previous draft included an immediate mode parameter but further discussion 
has shown that it should be removed until identity information is also 
addressed. Identity is outside the scope of this particular extension.

I'd like this draft to become a working group document and have done my best to 
make it represent the group's consensus. Unfortunately the internet draft 
submission process is closed for a few weeks until after the meeting. :-\

Thanks,
--David
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