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Re: ISSUE-125: Finding out whether a user agent supports DNT

From: Sean Harvey <sharvey@google.com>
Date: Tue, 27 Mar 2012 07:06:03 +0800
Message-ID: <CAFy-vuffn8ooXT-F8L4neyj4WR8_81meW36a1A6wsDjLS8AcDw@mail.gmail.com>
To: Nicholas Doty <npdoty@w3.org>
Cc: Matthias Schunter <mts-std@schunter.org>, Shane Wiley <wileys@yahoo-inc.com>, "public-tracking@w3.org" <public-tracking@w3.org>
Hi Nick, I can't recall my involvement in this request, but in general i
wasn't concerned about requesting exceptions even where there is no header.
shane, what is the context in which this is relevant/important?

On Tue, Mar 27, 2012 at 4:06 AM, Nicholas Doty <npdoty@w3.org> wrote:

> I drafted a brief section in response to this request (which I think was
> coming primarily from Shane and Sean); that was ACTION-122.
> 6.6 Exceptions without a DNT header
> Sites might wish to request exceptions even when a user arrives without a
> DNT header. Users might wish to grant affirmative permission to tracking on
> or by certain sites even without expressing general tracking preferences.
> User
> agents may instantiate NavigatorDoNotTrack.requestSiteSpecificTrackingException even
> when navigator.doNotTrack is null. Sites should test for the existence
> of requestSiteSpecificTrackingException before calling the method. If an
> exception is granted in this context and the user-agent stores that
> preference, a user agent may send a DNT:0 header even if a tracking
> preference isn't expressed for other requests. Persisted
> preferences may also affect which header is transmitted if a user later
> chooses to express a tracking preference.
> Note: Users might not configure their agents to have simple values for
> DNT, but use different browsing modes or other contextual information to
> decide on a DNT value. What algorithm a user agent employs to determine DNT
> values (or the lack thereof) is out of the scope of this specification.
> http://www.w3.org/2011/tracking-protection/drafts/tracking-dnt.html#exceptions-when-not-enabled
> If we're happy with that text as a response, then I think we can close
> this as having resolved the issue. Shane and Sean, does this text work for
> you? If not, would you like to take an action to write a counter-proposal
> or detail the use cases that this doesn't work for?
> Thanks,
> Nick

Sean Harvey
Business Product Manager
Google, Inc.
Received on Monday, 26 March 2012 23:06:32 UTC

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