Moves uses motion sensors inside Apple and Android phones, as well as GPS information, to track a user's location and activity throughout the day. Not only does its information include someone's whereabouts, down to which building they were in when they started using the service, it even knows if they travelled between locations on foot, bike or bus.
On the day of its acquisition, the company promised users that "the Moves experience will continue to operate as a standalone app, and there are no plans to change that or commingle data with Facebook". A Facebook spokeswoman told the Wall Street Journal that that remained the case, but that the companies would share data.
The Guardian has asked Facebook to clarify the difference between "share" and "commingle", but has received no reply at press time.
The change comes after Facebook's F8 developer conference, where the company promoted a new, privacy-friendly version of itself. Users will now be able to log in to apps anonymously, letting them try them out before they need to provide them with personal information.
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