W3C home > Mailing lists > Public > public-tracking@w3.org > October 2013

Re: tracking-ISSUE-219 (Context separation): 3rd parties that are 1st parties must not use data across these contexts [Compliance Current]

From: David Wainberg <dwainberg@appnexus.com>
Date: Fri, 4 Oct 2013 08:54:19 -0400
Message-ID: <524EBA7B.8000902@appnexus.com>
To: Mike O'Neill <michael.oneill@baycloud.com>
CC: 'Rob Sherman' <robsherman@fb.com>, 'Walter van Holst' <walter.van.holst@xs4all.nl>, <public-tracking@w3.org> 
Mike,

On 2013-10-03 11:11 AM, Mike O'Neill wrote:
> Rob,
>
> The problem is not customisation per se but relying on the use of persistent
> unique ids to do it. If you do not track you do not need unique ids - you
> can still customise with low entropy cookies i.e. ("I prefer green like
> buttons", "My preferred language is German"). Using unique ids also lets you
> collect web activity. If someone has DNT set and you do not have a permitted
> use you do not need to store or use (or derive) unique ids.
I'm glad you agree that customization itself is not the issue.

I don't think it's feasible to not have unique IDs, especially since 
they are required for the permitted uses.

Best,

David
Received on Friday, 4 October 2013 12:54:42 UTC

This archive was generated by hypermail 2.3.1 : Friday, 3 November 2017 21:45:19 UTC