| 摘要 |
<p>A method for selectively authorizing a transaction at one or more servers comprises steps for receiving a request to authorize the transaction, receiving machine fingerprint data related to the request to authorize the transaction, saving the machine fingerprint data in a memory, receiving associated payment information related to the request to authorize the transaction, saving the payment information in a memory, retrieving previously stored machine fingerprint data associated with the payment information, comparing the received machine fingerprint data with previously stored machine fingerprint data associated with the payment information, and determining, using the machine fingerprint data, whether to authorize the transaction.</p> |
