| 摘要 |
A system for exchanging cash change, owed by a vendor to a customer as a result of the customer purchasing a good or a service from the vendor, for an alternative offer of a good or a service, said system for performing the steps of generating change data representing a monetary value of the cash change owed to the customer by the vendor; generating offer data representing said alternative offer of said good or service; receiving acceptance data representing confirmation of acceptance of exchange of said cash change for said alternative offer of said good or service; and generating confirmation data representing confirmation of acceptance of exchange of said cash change for said alternative offer of said good or service, wherein said offer data has an offer value corresponding to said change data.
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