Abstract: A mobile device system is disclosed for defining a plurality of pre-defined geographical locations. The system provides that each of the plurality of pre-defined geographical locations is associated with a number of users of the mobile device system that are within one or more pre-defined geographical locations, and provides that each of the number of users may request that a particular one or more of the pre-defined geographical locations be activated, and provides that an activated pre-defined geographical location becomes activated when a minimum number of users send a ping signal from within the one or more pre-defined geographical locations.