3 ms·
It may be more complex than that. If both of you were tied into the Social Graph it's possible software on your devices simply knew the two of you were in proxi
by balibebas 8y ago
It may be more complex than that. If both of you were tied into the Social Graph it's possible software on your devices simply knew the two of you were in proximity and for how long. This could be done via Bluetooth by an app like WhatsApp or Facebook, which is known to have sensors installed in urban businesses. But who's to say they didn't just turn your device into a beacon itself using the Physical Web?