The makers of the web-browser Firefox are working on a system which will allow Internet users to stop themselves from being tracked on-line.
Mozilla wants to build a mechanism which will allow people to opt out of companies secretly monitoring which websites they visit, currently a common practice.
Internet giants like Google and Facebook use such information to sell targeted adverts and make money without ever asking the consent of the user.
Mozilla executives and other developers are to appear before a special panel this week in the U.S. to discuss how they will put an end to this.
Such a move would be welcomed by privacy campaigners who have long complained that Google and Facebook are taking liberties with the information they gather without properly consulting the wider public.
They say such practices are part of a wider disregard for personal data which was recently highlighted by the scandal over Google grabbing householdersâ€™ personal emails and passwords with its StreetView cars.
Currently companies like Google and Facebook make a fortune using â€˜cookiesâ€™ that automatically save themselves onto your computer when you surf the web then monitor your browsing history.
This data is then sold on to advertisers who put highly lucrative targeted adverts on the individualâ€™s screen, depending on what Internet pages they have recently been looking at.
Officials from Mozilla and on-line advertising company Lotame want to come up with a way of stopping this amid fears the U.S. government will at some point step in and do it for them.