Ad hoc formation and tracking of location-sharing groups

A computer-implemented method performed by one or more data processing apparatus, comprising:

• detecting formation of an ad hoc network between two or more mobile devices;
• defining a geofence around the ad hoc network, the geofence encloses respective current geographic locations of the two or more mobile devices;
• tracking a geographic location of the ad hoc network and a geographic coverage of the geofence around the ad hoc network;
• determining that a point of interest has entered the geofence;
• and
• notifying at least one mobile device in the ad hoc network about the point of interest.

A computer-readable medium having instructions stored thereon, the instructions, when executed by one or more processors, cause the processors to perform operations comprising:

• detecting formation of a location-sharing group between two or more mobile devices;
• defining a geofence around the location-sharing group, the geofence encloses respective current geographic locations of the two or more mobile devices;
• tracking a geographic location of the location-sharing group and a geographic coverage of the geofence around the location-sharing group;
• and
• providing the geographic location of the location-sharing group to at least one of the two or more mobile devices in the location-sharing group.

A system, comprising:

• one or more processors;
• memory having instructions stored thereon, the instructions, when executed by the one or more processors, cause the processors to perform operations comprising:
• detecting formation of a location-sharing group between two or more mobile devices;
• defining a geofence around the location-sharing group, the geofence encloses respective current geographic locations of the two or more mobile devices;
• tracking a geographic location of the location-sharing group and a geographic coverage of the geofence around the location-sharing group;
• and
• providing the geographic location of the location-sharing group to at least one of the two or more mobile devices in the location-sharing group.

A non-transitory computer-readable medium having instructions stored thereon, the instructions, when executed by one or more processors, cause the processors to perform operations comprising:

• detecting formation of an ad hoc network between two or more mobile devices;
• defining a geofence around the ad hoc network, the geofence encloses respective current geographic locations of the two or more mobile devices;
• tracking a geographic location of the ad hoc network and a geographic coverage of the geofence around the ad hoc network;
• determining that a point of interest has entered the geofence;
• and
• notifying at least one mobile device in the ad hoc network about the point of interest.

A system, comprising:

• one or more processors;
• memory having instructions stored thereon, the instructions, when executed by the one or more processors, cause the processors to perform operations comprising:
• detecting formation of an ad hoc network between two or more mobile devices;
• defining a geofence around the ad hoc network, the geofence encloses respective current geographic locations of the two or more mobile devices;
• tracking a geographic location of the ad hoc network and a geographic coverage of the geofence around the ad hoc network;
• determining that a point of interest has entered the geofence;
• and
• notifying at least one mobile device in the ad hoc network about the point of interest.