Abstract: A payment system prevents a payment method unavailable when receiving an article from being selected when purchasing the article. When an article is purchased from a commodity sale website through a computer, the computer displays an application payment code including a record of application payment address information of a payment method selection page associated with the payment of the article. When the application payment address information is read from the application payment code displayed on the computer by a mobile terminal that has installed a payment application, with the payment application being started to perform payment processing, the payment method selection page is displayed on the screen of the mobile terminal, with selectable indication of several payment methods. When any one of the payment methods is selected, the selected payment method is transmitted to the commodity sale website together with purchase information.

Abstract: Server device for performing a transaction in a system having a first entity, such as a POS, a second entity, such as a user having a mobile phone with a digital camera, and a remote server. The first entity generates a code having a transaction information and sends a first message to a server. The second entity, such as a buyer of a product or a user of a service captures the code and transmits a second message to the server having information on the transaction extracted from the code. The transaction is only authorized, when the server has determined that the first message and the second message match with each other. The transaction can be a payment transfer, a grant of an access to a service or a grant of an access to an internet portal.

Abstract: Server device for performing a transaction in a system having a first entity, such as a POS, a second entity, such as a user having a mobile phone with a digital camera, and a remote server. The first entity generates a code having a transaction information and sends a first message to a server. The second entity, such as a buyer of a product or a user of a service captures the code and transmits a second message to the server having information on the transaction extracted from the code. The transaction is only authorized, when the server has determined that the first message and the second message match with each other. The transaction can be a payment transfer, a grant of an access to a service or a grant of an access to an internet portal.