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

From: John Simpson <john@consumerwatchdog.org>
Date: Fri, 1 Jun 2012 14:26:41 -0700
Message-Id: <DABB9F5C-3067-474F-AB46-69ED0D795900@consumerwatchdog.org>
Cc: David Singer <singer@apple.com>, 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>
To: Shane Wiley <wileys@yahoo-inc.com>
How would you "know" a US is noncompliant?

On Jun 1, 2012, at 2:22 PM, Shane Wiley wrote:

> David,
> 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.
> - Shane
> From: David Singer [mailto:singer@apple.com] 
> Sent: Friday, June 01, 2012 2:17 PM
> To: Kevin Smith
> Cc: ifette@google.com; Lauren Gelman; Shane Wiley; 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 13:53 , Kevin Smith wrote:
> A better question would be, does a compliant entity have to respect a signal sent from a non-compliant entity. 
> I guess you can choose to be non-compliant to the protocol and try to plead that you because you believe the other end was non-compliant first, but second-guessing the other end will probably not be part of the protocol and therefore probably will not make you compliant.  
> Even if we define that GP UAs cannot have it on by default, how would you tell the difference between a user that wanted it on, and a user who had not thought about it?  To be compliant, you have to respect the first user's desires.
> Note that I am not agreeing with (or discussing) whether general-purpose UAs should turn it on by default, only whether servers have any business trying to second guess "gee, did he really really MEAN that or can I ignore it, I wonder?". The answer can only be 'no, I think. You have other mechanisms to criticize incorrect implementations than ignoring what they say.
> David Singer
> Multimedia and Software Standards, Apple Inc.

John M. Simpson
Consumer Advocate
Consumer Watchdog
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Santa Monica, CA,90405
Tel: 310-392-7041
Cell: 310-292-1902
Received on Friday, 1 June 2012 21:27:18 UTC

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