Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Patent
1996-02-23
1999-05-25
Wolinsky, Scott
Telephonic communications
Telephone line or system combined with diverse electrical...
Having transmission of a digital message signal over a...
379 8802, 379188, 379283, 379361, 34082534, 704246, 704273, H04M 316, H04M 1100
Patent
active
059075970
ABSTRACT:
A user-authentication system includes an authorized user device (AUD) for transmission of dtmf tones to a user-verification system (UVS) over a telephone network, where user-verification is performed and authorized users are granted access to a desired service. In a memory module of the AUD, a plurality of passphrases and identifying data are stored for subsequent transmission to the UVS. The UVS includes a memory module for receiving and storing the passphrases and identifying data, and a processor for determining whether user-stated passphrases correspond to the stored passphrases, and for prompting the user with knowledge-based questions and determining whether the identifying data corresponds to answers given by a user in response to the knowledge-based questions. The UVS further includes security safeguards such a transmitter transmitting a signal relating to time while a user is stating a passphrase, to determine whether a user-stated passphrase comprises a previously recorded passphrase, and an analyzer device determining whether the access number used to reach the user-verification system are appropriate for the specific user-device.
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Wolinsky Scott
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