Facebook has been ordered to stop tracking people without the consent, by a court in Belgium.
The company said it eliminate all data collected on people who do not use Facebook. The court has established that the data processed in violation of the law.
Belgium’s privacy watchdog said that the site has broken the privacy laws by inserting the tracking code – cookies – third-party web sites.
Facebook has said that the appeal against the judgment.
The social network faces a fine of 250,000 euros (Â£221,000, $311,000) a day, if it is not compliant.
The court stated that Facebook needs to “stop following and record the use of the internet by people who sail in Belgium, up to when it is not in conformity with the Belgian privacy laws”.
“Facebook must destroy all the personal data collected illegally.”
The ruling is the latest in a long-running dispute between the social network and the Belgian commission for the protection of privacy (CPP).
In 2015, the CPP complained that Facebook tracked down the people when they visited pages of the site, or clicked “I like” or “share”, even if they are not members.
He won his case, but Facebook has had the verdict overturned in 2016.
Now the court has agreed with the findings of the CPP.
Facebook said it was “disappointed” by the verdict.
Richard Allan, the company’s vice-president of public order in Europe, said: “cookies and pixels we use standard technologies, and allow hundreds of thousands of businesses to grow their business and reach customers across the EU.”