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Re: Frequency Capping

From: Roy T. Fielding <fielding@gbiv.com>
Date: Thu, 12 Jul 2012 13:44:48 -0700
Cc: Peter Eckersley <peter.eckersley@gmail.com>, W3C DNT Working Group Mailing List <public-tracking@w3.org>
Message-Id: <A5B119D1-B17F-4B1F-9E12-71BC06A41337@gbiv.com>
To: Tamir Israel <tisrael@cippic.ca>
On Jul 12, 2012, at 12:56 PM, Tamir Israel wrote:

> On 7/12/2012 3:12 PM, Roy T. Fielding wrote:
>> Yes, and it has been rejected many times because the ID cookies are
>> used by other features that won't be turned off by DNT.
> 
> Not so. I have never interacted and have no relationship with third party server X.

Regardless of Shane's first-party perspective, your browser sent
an HTTP request to the third party server. That is interacting with it.

> Why does it need to be able to identify me in any way?

Some clients don't interact in a friendly way.  It requires effort
for a service to separate bad clients from good clients.  Cookies
are one of the main ways to reduce that effort (and not just in the
obvious way of identifying a specific UA, which is easy to forge).

ID cookies are not a significant privacy concern if data retention
is constrained in the ways already outlined for frequency capping.

....Roy
Received on Thursday, 12 July 2012 20:45:11 UTC

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