Patent ID: 11902283
Assignee: PASSLOGY CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A transaction system comprising a server, a first terminal, and a second terminal, both the first terminal and the second terminal being assigned to a same user name, wherein
when an application is started on the second terminal, the application notifies the server of a notification that:
the application is running on the second terminal, and
the application is ready to receive a notice from the server,

the first terminal receives a login password input by a user and sends, to the server, a login request specifying the input login password,
after receiving the login request,
when the server has already received the notification from the application and the login password specified in the login request is correct for the same user name, the server authenticates the user successfully, and
when the server has not been notified of the notification from the application, the server fails to authenticate the user using the first terminal,

the first terminal obtains transaction information which is input by the authenticated user to the first terminal, and sends a transaction request specifying the obtained transaction information,
the server receives the transaction request from the first terminal, generates a notice specifying details of the transaction request, and transmits the generated notice to the application running on the second terminal,
the application running on the second terminal receives the transmitted notice from the server, and displays, on a second screen of the second terminal, the details specified in the received notice,
the first terminal prompts the authenticated user to compare the transaction information which is input by the authenticated user to the first terminal with the displayed details on the second screen, and input, to the first terminal, an answer based on the displayed details, and
the server accepts the input answer from the first terminal, and determines whether the transaction request is confirmed by the authenticated user or not, based on whether the accepted answer is based on the displayed details or not.