| 摘要 |
Method and apparatus for allowing persons to securely identify themselves in electronic commerce and transactions involving other parties. A token stores or determines a set of cryptographic signatures and uses a sound component to generate a unique audible tone representative of a cryptographic signature. The audible tone is conveyed to a party requesting authentication of the token holder, whereupon the party determines whether the information conveyed by the audible tone exists in a database of identities.
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