A "face-off" is initiated when a first device Dl detects a nearby second device D2, with or without direct device to device information exchange, at the same place and in time t l using non-contact proximity sensors where tl=t20O and t2 is the time recorded by D2 and autonomically establishes one way or duplex c...

This invention provides for a mechanism for detection of a simultaneous proximity event of two devices in order to identify the time for the occurrence of the proximity event and to trigger subsequent actions. A Simultaneous Proximity event is an event where two devices detect that they are in proximity to each ...