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As shown in FIG. 1, the system 100 includes a data processor 14, a communication interface 16, a customer service database 17, an advertisement database 18, and at least one PDA 20 carried by a user such as a customer, all operatively coupled. [0023] The PDA 20 is a conventional PDA capable of short-range wireless communication 22 with the communication interface 16 according to known communicatio
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