Settlement device and method for settlement device

A point-of-sale system, comprising:

• a first touch panel positioned for operation by a store clerk;
• a keyboard positioned for operation by the store clerk;
• a second touch panel positioned for operation by a customer;
• and
• a processor configured to:
• receive a selection of a price payment method out of a plurality of price payment methods by the store clerk via the first touch panel or the keyboard;
• and
• receive a selection of a price payment method out of the plurality of price payment methods by the customer via the second touch panel, wherein
• when the first touch panel and the keyboard are configured to provide the selection, the processor is configured not to receive the selection from the second touch panel, and
• when the second touch panel is configured to provide the selection, the processor is configured not to receive the selection from the first touch panel and the keyboard.

A settlement method for point-of-sale systems, the method comprising:

• causing a first touch panel to display a first payment method selection screen to a store clerk while a second touch panel for a customer displays a different screen that is not a payment selection screen;
• causing the second touch panel to display a second payment method selection screen while the first touch panel displays a screen that is not a payment selection screen;
• controlling the point-of-sale system not to receive input for selecting a payment method from the second touch panel while the first touch panel displays the first payment selection screen;
• and
• controlling the point-of-sale system not to receive input for selecting the payment from the first touch panel while the second touch panel displays the second payment selection screen.