Updated Drafts of Tracking Preference Expression (DNT), and Tracking Compliance and Scope

13 September 2013

The Tracking Protection Working Group has updated two Working Drafts:

• Tracking Preference Expression (DNT). This specification defines the technical mechanisms for expressing a tracking preference via the DNT request header field in HTTP, via an HTML DOM property readable by embedded scripts, and via properties accessible to various user agent plug-in or extension APIs. It also defines mechanisms for sites to signal whether and how they honor this preference, both in the form of a machine-readable tracking status resource at a well-known location and via a "Tk" response header field, and a mechanism for allowing the user to approve exceptions to DNT as desired.
• Tracking Compliance and Scope. This specification defines the meaning of a Do Not Track (DNT) preference and sets out practices for websites to comply with this preference.

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