Apple has recently acquired the facial-recognition software firm Polar Rose whose technology has the ability to allow internet users to "tag, detect, manage, and search for Facebook (including other social networks) friends in Flickr photos".

The Business Press reports that it appears likely Apple will "implement the technology into mobiles.., allowing users to easily tag, search and manage friends with synchronizing capabilities on iOS powered devices such as the iPhone and iPad".

Facebook's own privacy policy makes extensive reference to the ability of individual users to "control the privacy level... of all the content [they] post on a day-to-day basis"...