| 摘要 |
A customer computer 12 , vendor computer 16 and verification computer 14 are interconnected by means of a network 18 , such as the internet The customer 12 can initiate a transaction, such as the purchase of information from the vendor 16 . However, the vendor 16 will not proceed until verification of the transaction has been received from the site 14 . This is not provided until the customer 12 has sent a unique fingerprint of data to the site 14 , identifying the customer machine by reference to hardware device types or serial numbers, software types or licences, e-mail addressed or the like. This fingerprint is stored for future reference in showing that the transaction was validly implemented by the customer machine 12.
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