| 摘要 |
As described herein, a card services provider dynamically generates a card verification value (CVV) for a transaction card and sends the dynamically-generated CVV to a cardholder. The card services provider generates the dynamically-generated CVV such that the dynamically-generated CVV is substantially unpredictable based on other dynamically-generated CVVs for the transaction card. The dynamically-generated CVV is only valid for a limited period of time and/or for a limited number of economic transactions. The cardholder uses the dynamically-generated CVV as part of an economic transaction with a merchant. Because the dynamically-generated CVV is only valid for a limited number of economic transactions and/or for a limited period of time, it may be difficult for a thief to repeatedly use the transaction card to make economic transactions.
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