| 摘要 |
A sponsored portable coupon payment device is disclosed with methods and systems for its provision and use in an open payment transaction processing system. The open payment transaction processing system includes issuers of accounts to the sponsors, merchants accepting transactions on the accounts, and acquirers for the merchants. A transaction handler in the open payment transaction processing system facilitates between the issuers and the acquirers, at least in part, authorization of the transactions, and clearing and settlement of the transactions.
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