USER AUTHENTICATION METHOD, SETTLEMENT METHOD, INFORMATION PROCESSING METHOD FOR USER AUTHENTICATION, INFORMATION PROCESSING METHOD FOR SETTLEMENT, INFORMATION PROCESSING SYSTEM FOR USER AUTHENTICATION, INFORMATION PROCESSING SYSTEM FOR SETTLEMENT, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To perform the authentication of a user and a settlement safer and easier than a conventional method. SOLUTION: This user authentication method comprises the steps of transmitting a desired type of settlement, ordered contents of commodities, and terminal identification information from the personal computer 20 of the user 10 to the web server 41 of a network shop through the Internet 30, transmitting terminal identification information and authentication request information from the web server 41 to the authentication system 51 of a communication enterprise through the Internet, transmitting, based on the terminal identification information, a one time URL from the authentication system 51 to the cell phone 60 of the user 10 through a cellphone communication network 70, transmitting, based on the one time URL, identification information from the cellphone 60 to a connected side for authentication through the cellphone communication network, and performing, based on the received identification information and pre-prepared identification information, the authentication as to whether or not the user 10 is a person in question. After the authentication of the user, the settlement may be performed by the authentication system 51.