PROBLEM TO BE SOLVED: To install a processing system of a management type prepaid card with low cost without necessity of changing a POS terminal.;SOLUTION: A mounting board 12 connected to a validation server 60 for validating a prepaid card, a barcode scanner 40, and a POS terminal 20 includes: a commodity information acquisition part 101 for acquiring commodity information from the barcode scanner 40; a commodity information determination part 102 for determining whether the acquired commodity information is associated with a management type prepaid card that needs to be validated; a commodity information conversion part 108 for converting the commodity information into commodity information data that is interpretable for the POS terminal 20, when the commodity information is associated with a management type prepaid card; a commodity information data output part 109 for outputting the commodity information data to the POS terminal 20; and a validation request part 103 for transmitting the commodity information to the validation server 60 to request validation, when the commodity information is associated with a management type prepaid card.;COPYRIGHT: (C)2012,JPO&INPIT
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