There is disclosed an application controller for use with a two-way
wireless messaging system. The application controller is distributed, at
least in part, among a plurality communication units associated with the
two-way wireless messaging system. The application controller is capable
of controlling cooperative communication among ones of the communication
units in accordance with a prescribed application task, and comprises a
data repository, first and second communication controllers, and an
operations controller. The data repository maintains at least one
subscriber profile. The first communication unit controller senses change
in a characteristic monitored at a first communication unit, wherein the
monitored characteristic is evaluated in accordance with the prescribed
application task, and, in response thereto, automatically causes the first
communication unit to transmit a first data signal. The operations
controller analyzes the first data signal in accordance with the
prescribed application task using the at least one subscriber profile,
and, in response thereto, causes a second data signal to be communicated
automatically to at least a second communication unit. The second
communication unit controller automatically analyzes the second data
signal at the second communication unit, and, in response thereto,
transmits an acknowledgment signal to at least said first communication
unit.