Mozilla Plans ‘Do-Not-Track’ Privacy Tools for Firefox
Mozilla wants to create a new HTTP header that will allow Firefox and other browsers to shut off web tracking tools like cookies. The new header would offer a universal way to tell websites that a user wishes to opt-out of third party, advertising-based tracking.
While the new header is just a proposal at the moment, Mozilla already has some code ready and is considering adding the feature to future versions of Firefox. The current plan is to create a new preferences option that would allow you to opt-out from tracking. Check the box in the preferences and Firefox will start sending the do-not-track header each time you request a new page.
Interestingly, the header Mozilla proposes is not the same as the “X-Do-Not-Track” proposal, which is already implemented in Firefox add-ons NoScript and Adblock Plus. For more details on how Mozilla’s new HTTP header will work, see Mozilla developer Sid Stamm’s blog post.
Like Mozilla’s proposed privacy icons, the problem with the new header is getting third-party ad sites to obey it. Mozilla calls it a “chicken and egg” problem and hopes to jumpstart the idea by including the header in future releases of Firefox. At that point it would be up to third party websites to support the header and, as Mozilla puts it, “honor people’s privacy choices.”