The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 2014
Filed:
Jul. 06, 2007
Haruhiko Fujii, Tokyo, JP;
Tetsuya Nakagawa, Tokyo, JP;
Haruhiko Fujii, Tokyo, JP;
Tetsuya Nakagawa, Tokyo, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A user authentication method is applied to a user authentication apparatus for authentication using a unique ID that is information unique to a communication apparatus. The method includes acquiring a user ID as information identifying a user, and detecting a unique ID corresponding to the user ID from a user ID list. The method also includes making a call with a predetermined number of rings to a communication apparatus having the unique ID. Additionally, the method includes receiving a callback made by a communication apparatus after a predetermined number of rings of the call in response to the call. In addition, the method includes determining whether a unique ID of the communication apparatus having made the callback matches the unique ID of the communication apparatus to which the call has been made, and determining, if there is a match, that a user having the user ID is an authorized user.