PURPOSE: To perform the checkout operation in any place or a shop by detachably attaching a scanning terminal between handles of two carts.

CONSTITUTION: A bracket member 60 is used to detachably attach a scanning terminal 44 to handles of carts 48 and 50, and many receptacles 66 are arranged in the vicinity of a checkout counter, and the scanning terminal 44 is normally used to avoid crowdedness in the rush hour. In this case, a checkout operator moves a commodity cart 50 of a customer to a position near the receptacle 66 facing the cart 48, where bags 56 are put, and inserts an electric cable 64 to the receptacle 66 after attaching the scanning terminal 44 of the handle 46 of the commodity cart and performs the checkout operation. Thus, the checkout operation of customers lining up before the checkout counter is quickly performed.