Browser firms plan 'do not track' systems

Examining DNA, SPL Web users are getting more control over the information shared about them online

Related Stories

Anyone keen to avoid being tracked by ad firms as they use the web are getting more help from browser makers.

Mozilla and Google have unveiled different ways for people to dodge efforts to monitor what they do online and tailor ads to their likes.

Google has made a Chrome extension that permanently opts people out of the ad-tracking systems used on the web.

Mozilla is proposing a way for people to declare to every site they visit that they do not want to be tracked.

Web monitor

The two approaches are part of a larger move resisting the efforts of web advertisers to profile people's online activities in ever more detail. Typically this tracking is accomplished through cookies, small text files many sites use to customise sites for regular visitors.

It is already possible to opt out of many of these tracking systems using tools provided by the Network Advertising Initiative (NAI), an industry body representing web firms and online ad agencies.

Digital rights group The Electronic Frontier Foundation (EFF) has pointed out the shortcomings of the NAI approach because its members do not share a definition of what "opt out" means. In some cases, said the EFF, opting out does not mean people stop being tracked.

Google's Chrome extension tries to solve one problem with the NAI tool as the preferences it sets can be wiped out if a user clears the cookies stored by their browser. As its name implies, the Keep My Opt Out extension preserves these settings even if cookies get wiped.

Mozilla has taken a different approach by proposing a way for users of Firefox to declare to every site they visit that they do not want to be tracked by ad networks who monitor who comes to that site.

The new tool will let Firefox users set a preference that puts the do not track instruction in the basic information browsers hand over to every site a person visits.

Mozilla said this approach was "more persistent" than approaches that revolve around cookies. The organisation did recognise one problem with its solution, namely that it requires the agreement of ad firms to become workable. These agreements are not yet in place.

So far, the Mozilla plan is just a proposal and has not resulted in code or add-ons for the Firefox browser.

Microsoft is planning a do not track system for its IE9 browser that will let users manage who they want to share data with and which will warn them when data is about to be shared.

In December, the US Federal Trade Commission released a report which backed plans for a "Do Not Track" system for the web that would work like the similar opt out systems that stop people getting junk mail or being cold-called by marketing firms.

More on This Story

Related Stories

The BBC is not responsible for the content of external Internet sites

More Technology stories


Features & Analysis

  • Prostitute in red light district in Seoul, South KoreaSex for soldiers

    How Korea helped prostitutes work near US military bases

  • LuckyDumped

    The rubbish collector left on the scrap heap as his city cleans up

  • A woman gets a Thanksgiving meal at a church in FergusonFamily fears

    Three generations in Ferguson share Thanksgiving reflections

  • Canada joins TwitterTweet North

    Canada's self-deprecating social media feed

Elsewhere on the BBC

  • IslandsUnmapped places

    Will the age-old quest to capture uncharted land and space ever end?


  • All-inclusive holidaysThe Travel Show Watch

    With all-inclusive holidays seeing a resurgence are local trades missing out to big resorts?

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.