A Facebook patent will help users communicate with other wireless devices in their vicinity.
The patent describes a method of using the devices of Facebook app users to identify wireless signals (including Bluetooth, Z-Wave or Zigbee, NFC or PAN communications) from the devices of other users. It will help the Facebook app understand whether you've ever met with any users around you, how close the two devices are to one another and for how long and how often it happens.
Is this another reason to fear the giant...?
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