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Re: tracking-ISSUE-121: Should a user agent advertise its DNT ability by, e.g., sending DNT;NULL [Tracking Preference Expression (DNT)]

From: John Simpson <john@consumerwatchdog.org>
Date: Wed, 1 Feb 2012 13:08:23 -0800
Message-Id: <9BFD8E71-7E42-44AC-9CF2-1C71C990DCE9@consumerwatchdog.org>
Cc: Tracking Protection Working Group WG <public-tracking@w3.org>, Shane Wiley <wileys@yahoo-inc.com>
To: Nicholas Doty <npdoty@w3.org>
Agree with Nick.

On Feb 1, 2012, at 6:40 AM, Nicholas Doty wrote:

> Apologies if I'm repeating questions from the f2f but I'm still uncertain about the use cases for this proposal. 
> 
> What would a server/publisher do differently if it received DNT:null than if it didn't receive a DNT header at all? Why would a user wish to broadcast their user agent's ability when they hadn't yet expressed a preference?
> 
> óNick
> 
> On Jan 31, 2012, at 1:33 AM, Tracking Protection Working Group Issue Tracker wrote:
>> tracking-ISSUE-121: Should a user agent advertise its DNT ability by, e.g., sending DNT;NULL [Tracking Preference Expression (DNT)]
>> 
>> http://www.w3.org/2011/tracking-protection/track/issues/121
>> 
>> Raised by: Shane Wiley
>> On product: Tracking Preference Expression (DNT)
>> 
>> 2012-01-30 Shane said:
>> 
>> <non-normative>
>> As many User Agents may fall outside of the large web browser vendors, such as Apps, Toolbars, Custom Web Kits, etc., it will be helpful for publishers to receive a signal that a User Agent supports DNT even when a user has not yet provided a preference.
>> 
>> <normative>
>> User Agents SHOULD provide a null DNT signal if the user has not yet provided a preference and the User Agent supports DNT. 
>> As many User Agents may fall outside of the large web browser vendors, such as Apps, Toolbars, Custom Web Kits, etc., it will be helpful for publishers to receive a signal that a User Agent supports DNT even when a user has not yet provided a preference.
>> 
>> <normative>
>> User Agents SHOULD provide a null DNT signal if the user has not yet provided a preference and the User Agent supports DNT.  
> 

----------
John M. Simpson
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Received on Wednesday, 1 February 2012 21:08:36 UTC

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