To efficiently process various services that shopping customers demand when checking out at a register terminal by securely transmitting them.

A customer terminal that a shopping customer carries is equipped with a service request input means for inputting a request for troublesome service such as the sticking of a long, thin strip attached to a gift, payment by a credit card, and the issue of a receipt when checking out at the register terminal and an in-store device has a notification means which notifies a shop clerk of the contents of the requested service and a guide means which guides the customer.