Patent ID: 8064887

Claim:
A system for delivering a pre-recorded audio message in response to the changing position of at least one object, said system comprising, in combination: a memory unit for storing: at least one spoken audio message recorded as an audio file stored as a member of a collection of different audio files stored in said digital memory, location data produced by one or more location detectors, said location data indicating the position and identity of said at least one object at different times, and data specifying one or more rules, each of said rules containing a condition part and an action part, said condition part defining at least one relative position condition to be satisfied by said at least one object and each action part specifying the particular audio file in said collection to be delivered when said condition part is satisfied and further specifying the destination to which said particular audio file is to be delivered, a processor coupled to said memory unit for evaluating said location data in accordance with said one or more rules, and a message transmitter responsive to said processor for delivering said particular audio file in the manner specified by the action part of each of said rules whose condition part is satisfied by said location data.