About the user authentication service 3D-Secure
"Tokaido Sanyo Kyushu Shinkansen Internet Reservation Service" introduces the personal authentication service (3D Secure) recommended by credit card brands when you register or change your credit card, in order to ensure the safety of credit card payment.
In case you have not set up the personal authentication service (3D Secure), your credit card does not support the service, or the authentication by the service fails, etc., you may not be able to register as a new member of "Tokaido Sanyo Kyushu Shinkansen Internet Reservation Service" or change your credit card information (change your credit card or update the expiration date).
If you have any questions about the personal authentication service (3D Secure), please contact your credit card company listed on the back of your card.
In case you have not set up the personal authentication service (3D Secure), your credit card does not support the service, or the authentication by the service fails, etc., you may not be able to register as a new member of "Tokaido Sanyo Kyushu Shinkansen Internet Reservation Service" or change your credit card information (change your credit card or update the expiration date).
If you have any questions about the personal authentication service (3D Secure), please contact your credit card company listed on the back of your card.