| 摘要 |
Some embodiments of the present invention provide a system that performs card-based transactions. During operation, the system displays a set of magnetic-stripe cards to a user through a user interface of a portable device and obtains a user selection of a magnetic-stripe card from the set of magnetic stripe cards. Next, the system writes magnetic-stripe data associated with the magnetic-stripe card to a rewritable magnetic stripe on the portable device. Finally, the system uses the rewritable magnetic stripe in the card-based transaction in place of the magnetic-stripe card.
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