| 摘要 |
Methods, systems, and apparatus, including computer program products, in which a method includes attributing a value to a pre-paid payment instrument, determining an expiration time associated with the pre-paid payment instrument, and automatically return an un-used portion of value associated with the pre-paid payment instrument at the expiration time to the purchaser. Methods, systems, and apparatus, including computer program products, in which a method includes attributing a value to a pre-paid payment instrument, determining an expiration time associated with the pre-paid payment instrument, and automatically return an un-used portion of value associated with the pre-paid payment instrument at the expiration time to the purchaser. WO 2009/073451 PCT/US2008/084573 103a 102a User 103a Device 106a User Rtie Device Retailer Network 102b 103b 106b User Device Retailer Pre-Paid Payment System Fig. I |
