To provide an authentication/payment method and system capable of preventing illegal use such as a third person pretended as a real user, integrating an insurance system into the system and including insurance capable of transforming a merchant's loss risk to a credit company.
An authentication/payment platform 7 for making an inclusive insurance contract with an insurance company 9, making a member store contract with a merchant 5 and making an authentication deputizing contract with a credit issuer 3a is set up, attribute information inherent in a consumer is registered and the consumer is confirmed as the person himself (or herself) by executing strict authentication on the basis of a password from the consumer to permit the real consumer to purchase a commodity. When an objection is lodged against a claim of payment, the authentication is confirmed by the platform 7, and when there is no problem of authentication, the application of insurance is claimed and an insurance company applies the insurance to the credit company.
IMAIZUMI NORIKO
UMEMOTO KOHEI
ISEDA MASAKO
SASAKI TAKASHI
SHIMAZAKI TAKESHI
YUSA HIROSHI
