RETAIL TRANSACTION PROMOTION SYSTEM

An augmented point of sale system that displays, and that may broadcast, during a retail transaction, promotional information to a customer selected on the basis of the context of the transaction. An existing front-end POS system is augmented with an auxiliary display device intended for viewing by a customer while the customer interacts with the sales clerk in order to conduct a retail transaction. Software components are added to the point of sale system in order to generate messages corresponding to events that occur during the transaction and to, in turn, translate those events into display images displayed on the auxiliary display device. The auxiliary display device can display text, broadcast music or audio information, show video clips and other real-time dynamic media, and display static images.