Facebook intros new opt-in feature called Nearby Friends (for Android and iPhone)

Nearby Friends isn’t a feature that will be enabled by default. Users can turn it on (or off) at any time, and they can choose which friends to see. To detect a friend nearby, both you and him/her need to have the new feature enabled.
Non-US users who may already think that this is a neat feature will probably be disappointed to find out that it won’t be released internationally - at least not for the beginning. According to Facebook, Nearby Friends will be available in the US in “the coming weeks.”
source: Facebook
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