Importance

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Abstract

A system and method for authenticating an identity on Internet is provided. The authentication system and method authenticates the identity of a user on the Internet whenever he/she needs to be authenticated through only one authentication procedure. The authentication system and method also checks the multiple registration of an applicant who wishes to register in a membership system web site or participate in an event permitting just one chance per man. The authentication system and method also checks the identity of a user logged on the membership system web site in a state where the user's anonymity is secured. Based on the fact that a subscriber has a personal resident registration number and/or a corporate/institute registration number, personal data about the subscriber's identity and credit is registered in a system server of the authentication system, and the authentication system is automatically linked to whenever the subscriber registers his/her identity to use, for example, electronic commerce on the Internet so that the subscriber's identity can be authenticated by the authentication system without proceeding with authentication whenever necessary, thereby allowing the subscriber to have a transaction on the Internet with the anonymity secured. In addition, subscriber information for each membership system web site is registered in the system server of the authentication system so that the multiple registration of a subscriber in a certain membership system web site can be checked. By authenticating the identity of a subscriber based on the guarantee of a guarantor (or a certification agency), the authenticated identity corresponds to the real subscriber one to one so that convenience in registering in web sites requiring identity authentication and the reliability on identities on the Internet can be improved, and the waste and misuse of resources due to multiple registration can be prevented.

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First Claim