| 摘要 |
A system and method for dual key dual database access control and identification system (Dual Key System) and method to maintain security, organization and privacy during electronic transactions. A dual key access card system maintains two separate and distinct database (201, 202), a public file database (202) and a private file database (201), for a given access cardholder. Each access cardholder has a record in each maintained database (201, 202); however, the records can only be integrated through the use of two record identifiers stored on the holder's access card (100). The dual database system allows the data maintained in each database to be kept relatively small, and allows for the anonymous public data to be processed more efficiently without knowing the identity of the person whose information is being maintained. As a result, an affinity-modeling engine can constantly run against the anonymous data while maintaining cardholder security and anonymity.
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