Commodity registration apparatus, checkout apparatus, and information processing method

A checkout apparatus, comprising:

• a recognizing module configured to recognize commodities placed on a placement area;
• a first weighing machine configured to measure a first weight as a total weight of commodities placed on the placement area;
• a second weighing machine configured to measure a second weight as a total weight of registered commodities;
• a registering module configured to register commodities recognized by the recognizing module as purchased commodities in response to a weight change amount of the second weight since the commodities are recognized by the recognizing module and the first weight when the commodities are recognized by the recognizing module are in a predetermined relationship after the commodities placed on the placement area are recognized by the recognizing module and the first weighing machine is in a standby state in which no measurement of the commodity is made;
• and
• a settlement module configured to perform settlement processing of commodities registered as purchased commodities by the registering module, wherein the settlement module does not perform the settlement processing when the registering module is in a standby state, until the weight change amount of the second weight since the commodities are recognized by the recognizing module and the first weight when the commodities are recognized by the recognizing module are in a predetermined relationship.