Tracking Protection Working Group

The Tracking Protection Working Group is chartered to improve user privacy and user control by defining mechanisms for expressing user preferences around Web tracking and for blocking or allowing Web tracking elements. The group seeks to standardize the technology and meaning of Do Not Track, and of Tracking Selection Lists.

Carl Cargill (Adobe), Justin Brookman (CDT) and Matthias Schunter (Intel) serve as co-chairs of the Tracking Protection Working Group. The W3C Team Contact is Nick Doty.


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Next teleconference

TBD (via email)
Teleconferences are held as needed on Wednesdays at 9am/12pm/6pm



Note: The group will occasionally update this schedule based on current progress. Future milestones are non-binding estimates.
* The group is discussing specific exit criteria for the CR milestone which may affect this timeline.
Specification FPWD LC CR PR Rec
Tracking Preference Expression September 2011 April 2014 December 2014 March 2015 June 2015
Tracking Preference Expression Definitions and Compliance September 2011 September 2014 December 2014 March 2015 June 2015
Tracking Selection Lists TBD TBD TBD TBD TBD

Call for Comments has ended

On Thursday, April 24, the Working Group published its Last Call Working Draft of the Tracking Preference Expression (DNT). The Call for Comments on the specification ended on June 18. We thank everyone, who has submitted technical reviews and comments. All feedback is publicly archived. The Chairs and the Working Group will issue written responses to all comments received in the upcoming weeks.

Past meetings

Eighth Face-to-Face

6-8 May 2013
Sunnyvale, California

Global Considerations Task Force Face-to-Face

11 - 12 March 2013
Berlin, Germany

Seventh Face-to-Face

11 - 13 February, 2013
Cambridge, Massachusetts

Sixth Face-to-Face

3 - 5 October, 2012
Amsterdam, Netherlands

Fifth Face-to-Face

20 - 22 June, 2012
Bellevue, WA, USA

Fourth Face-to-Face

10 - 12 April, 2012
Washington, DC, USA

Third Face-to-Face

24 - 26 January 2012
Brussels, Belgium. Hosted by the European Commission.

Second Face-to-Face

31 October - 1 November 2011
Santa Clara, CA, USA

Initial Face-to-Face

21-22 September 2011
Cambridge, MA, USA

Past teleconferences

Most recent minutes first; ordered left to right.

Input Documents

The chairs invite input documents for the Working Group to consider at its initial meeting. Please send possible documents to the working group mailing list. The following (non-exhaustive) list of relevant documents has been identified.

Additionally, please refer to the report and position papers from the W3C Workshop on Web Tracking and User Privacy in April 2011.

We invite the submission of use cases and input documents to the group mailing list.