Patent ID: 11887050
Assignee: RAKUTEN GROUP, INC.
Field: IT methods for management (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. A reservation confirmation method executed by a server that uses a message service enabled to discriminate whether a message sent to a destination has been read, the method comprising:
accepting a reservation of a product in response to a reservation request from a user device;
based on the reserved product arriving:
generating a first message including an interactive object to be displayed on the user device for canceling the reservation of the product reserved by a user; and
sending the first message including the interactive object to the user via the message service;

determining whether the first message including the interactive object has been marked as read;
canceling the reservation in response to receiving instruction information from the user device indicating that the interactive object is operated by the user on the user device in a predetermined time after the first message is determined to be marked as read;
determining whether the product is in stock when the interactive object remains unoperated on the user device for the predetermined time after the first message is determined to be marked as read; and
finalizing purchase of the product by the user when it is determined that the product is in stock,
wherein a second message notifying that the product has been sold out is sent to the user when it is determined that the product is out of stock.