A method and apparatus provide interactive participation at live entertainment events. Enjoyment for a plurality of participants is enhanced. Participants employ wireless interactive devices that present a promotional message and include user input and output interfaces. Participants are queried, and enter wagers via the user input interface. The wagers are transmitted to a central processor, stored as participant data, and processed into results. A visual display or the user output interface announces the results to the participants.

 
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> Method and system for processing supplementary product sales at a point-of-sale terminal

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