I think keeping the response type as extension point and not mentioning 
implicit at all is sufficient to support Brian’s objective.

> Am 07.03.2020 um 17:06 schrieb Dick Hardt <dick.ha...@gmail.com>:
> 
> 
> How about if we add in a nonnormative reference to OIDC as an explicit 
> example of an extension:
> 
> "For example, OIDC defines an implicit grant with additional security 
> features."
> 
> or similar language
> ᐧ
> 
>> On Sat, Mar 7, 2020 at 5:27 AM Brian Campbell <bcampb...@pingidentity.com> 
>> wrote:
>> The name implicit grant is unfortunately somewhat misleading/confusing but, 
>> for the case at hand, the extension mechanism isn't grant type so much as 
>> response type and even response mode. 
>> 
>> The perspective shared during the office hours call was, paraphrasing as 
>> best I can, that there are legitimate uses of implicit style flows in OpenID 
>> Connect (that likely won't be updated) and it would be really nice if this 
>> new 2.1 or whatever it's going to be document didn't imply that they were 
>> disallowed or problematic or otherwise create unnecessary FUD or confusion 
>> for the large population of existing deployments. 
>> 
>>> On Fri, Feb 28, 2020 at 1:56 PM Dick Hardt <dick.ha...@gmail.com> wrote:
>>> I'm looking to close out this topic. I heard that Brian and Vittorio shared 
>>> some points of view in the office hours, and wanted to confirm:
>>> 
>>> + Remove implicit flow from OAuth 2.1 and continue to highlight that grant 
>>> types are an extension mechanism.
>>> 
>>> For example, if OpenID Connect were to be updated to refer to OAuth 2.1 
>>> rather than OAuth 2..0, OIDC could define the implicit grant type with all 
>>> the appropriate considerations.
>>> 
>>> 
>>> ᐧ
>>> 
>>>> On Tue, Feb 18, 2020 at 10:49 PM Dominick Baier 
>>>> <dba...@leastprivilege.com> wrote:
>>>> No - please get rid of it.
>>>> 
>>>> ———
>>>> Dominick Baier
>>>> 
>>>>> On 18. February 2020 at 21:32:31, Dick Hardt (dick.ha...@gmail.com) wrote:
>>>>> 
>>>>> Hey List 
>>>>> 
>>>>> (I'm using the OAuth 2.1 name as a placeholder for the doc that Aaron, 
>>>>> Torsten, and I are working on)
>>>>> 
>>>>> Given the points Aaron brought up in
>>>>> 
>>>>> https://mailarchive.ietf.org/arch/msg/oauth/hXEfLXgEqrUQVi7Qy8X_279DCNU
>>>>> 
>>>>> 
>>>>> Does anyone have concerns with dropping the implicit flow from the OAuth 
>>>>> 2.1 document so that developers don't use it?
>>>>> 
>>>>> /Dick
>>>>> _______________________________________________ 
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>>>>> OAuth@ietf.org 
>>>>> https://www.ietf.org/mailman/listinfo/oauth 
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