To smoothly operate an unmanned register by monitoring the unmanned register by an opposited clerk of a manned register while affecting the unmanned register by the existence of the clerk.

Plural commodity receiving parts 8 are arranged on a rotating commodity carrier 1, a commodity is put on a setting board 2 and carried and information for specifying and sorting unspecified structure of arrangement convenient for concentrically monitoring commodities on one position in each customer by the position of a clerk of a manned register 4 is added to each commodity setting board 2 and carried together with a commodity to sort sales information operated by a scanner 10 and sort commodities to a burglar prevention room 7. An unmanned register capable of specifying a customer by sorting information and returning commodities is provided with a bar code unreadable processor, an illegal action correspondence device, an unmanned automatic monitoring device, and a discount adjusting device capable of reacting to a magnetic symbol added to a discount label, the manned register 4 is provided with a successive adjusting function for adding purchase information to a shopping basket 55 of which purchase calculation has been executed by the clerk and a commodity doposit adjusting function and the unmanned register is managed by the manned register 4.