French President Emmanuel Macron is pressing ahead with a digital tax in France, a move US President Donald Trump described as "foolishness", and the French leader is keen to reach an international agreement on taxing big tech companies.
digital giants - News, Features, and Slideshows
- Who's tracking you? Facebook users to get more control over data
- Explainer: Macron's quest for an international tax on digital services
The social media site said if a user clears their off-Facebook activity, Facebook would remove the user's identifying information from the data that apps and websites choose to send.
The company also launched two self-driving delivery robots - one for outdoor delivery, the other for indoor services.
The US-led "Five Eyes" intelligence alliance said on Tuesday that tech firms must allow law enforcement agencies access to encrypted material, warning that failing to do so puts people at risk.
The Justice Department has said it will investigate "whether and how" online platforms in "search, social media, and some retail services online" are engaging in behavior that stifles competition and harms consumers.