W3C home > Mailing lists > Public > public-tracking@w3.org > September 2012

ISSUE-137 Service provider flag

From: Matthias Schunter <mts-std@schunter.org>
Date: Mon, 10 Sep 2012 21:51:19 +0200
Message-ID: <504E44B7.1090002@schunter.org>
To: "Roy T. Fielding" <fielding@gbiv.com>
CC: "public-tracking@w3.org" <public-tracking@w3.org>
Hi Roy,

during our call on Wednesday (with Tom and David Singer), I finally
understood why Tom needs a service provider flag.

The use case he has in mind is that he would like to identify the
boundaries of a "same-party".
The reason is that if you interact with a site then a user agent would
like to be able to inform the end user that this site is part of a
{finite list} of sites that jointly constitute a single party in the DNT

We did not understand how this would be done based on the current site
responses. One concern we had was that service providers acting under
their own URL (statistics.com) may say that they are intended for 1st
party use while also declaring that they are "same-party" with multiple
parties that are not "same-party" with each other. As a consequence, one
can either no longer determine the boundaries of a party or else would
be able to pinpoint the service providers.

Quick questions:
- Do you understand this usecase?
- Do you agree with our observation about the current server responses?
- How would you implement this important use case?

Received on Monday, 10 September 2012 19:51:47 UTC

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