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RE: tracking-ISSUE-150: DNT conflicts from multiple user agents [Tracking Definitions and Compliance]

From: Shane Wiley <wileys@yahoo-inc.com>
Date: Fri, 1 Jun 2012 14:34:04 -0700
To: David Singer <singer@apple.com>
CC: Kevin Smith <kevsmith@adobe.com>, "ifette@google.com" <ifette@google.com>, Lauren Gelman <gelman@blurryedge.com>, Justin Brookman <justin@cdt.org>, "public-tracking@w3.org" <public-tracking@w3.org>
Message-ID: <63294A1959410048A33AEE161379C8023D1858FEA9@SP2-EX07VS02.ds.corp.yahoo.com>

To that point, we should add a new response value to the TPE for "Invalid User Agent" or "Non-Compliant User Agent" so this can be managed correctly with users.  One party should always be able to assert they feel the requestor is in error.  While I prefer strictly objective forms of validation in these cases, this is a policy centric standard so allowing for subject disagreement is appropriate.

- Shane

From: David Singer [mailto:singer@apple.com]
Sent: Friday, June 01, 2012 2:29 PM
To: Shane Wiley
Cc: Kevin Smith; ifette@google.com; Lauren Gelman; Justin Brookman; public-tracking@w3.org
Subject: Re: tracking-ISSUE-150: DNT conflicts from multiple user agents [Tracking Definitions and Compliance]

On Jun 1, 2012, at 14:22 , Shane Wiley wrote:


I disagree.  If you know that an UA is non-compliant, it should be fair to NOT honor the DNT signal from that non-compliant UA and message this back to the user in the well-known URI or Response Header.  Further, we can provide information for the user to use a UA that is DNT compliant if they wish for their preference to be honored in that regard.

OK, I think we will have to agree to disagree.  I can't think of any other spec., off hand, that allows one end to 'misbehave' if they believe the other end is misbehaving.  There *are* specs that deal with what you do if you see actual invalid values, incorrect responses, etc., but none that I know of that allow you to conclude 'you didn't really mean that' and do something other than what was signalled.

I still don't know how you tell the difference between a user who agree with, and wanted, the choice, and a user who wasn't aware of it.

David Singer
Multimedia and Software Standards, Apple Inc.
Received on Friday, 1 June 2012 21:35:19 UTC

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