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User authentication method and system, information terminal device and service providing server, subject identification method and system, correspondence confirmation method and system, object confirmation method and system, and program products for them

  • US 20050210267A1
  • Filed: 03/18/2004
  • Published: 09/22/2005
  • Est. Priority Date: 03/18/2004
  • Status: Abandoned Application
First Claim
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1. A user authentication method for performing authentication of an identity of a user of an information terminal device when the user receives a service from a service providing server via a network, the user authentication method comprising the steps of:

  • capturing an iris image of the user himself/herself in advance and storing and registering the iris image as registration iris image data in at least one of the information terminal device and the service providing server;

    transmitting a current password defined individually for the user from the information terminal device to the service providing server, capturing a current iris image of the user by an imaging means provided in the information terminal device, and generating current iris image data in the information terminal device when the user receives a service from the service providing server by the information terminal device;

    comparing thereafter by the service providing server the current password transmitted from the information terminal device with a password stored in the service providing server, and comparing the current iris image data with the registration iris image data by at least one of the information terminal device and the service providing server to thereby authenticate the identity of the user based on comparison results thereof; and

    updating automatically thereafter by one of the information terminal device and the service providing server the password to generate a new password to be used when a next service is provided, transmitting the new password to the other of the information terminal device and the service providing server, and storing the same new password in both the information terminal device and the service providing server.

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