Transaction system and commodity registration machine

A transaction system, comprising:

• a commodity registration machine that performs registration processing of acquiring commodity determination information for determining a commodity, which is an object to be subjected to check-out processing in a commodity transaction, and generating registration information including data regarding the commodity according to the acquired commodity determination information for the check-out processing;
• and
• a check-out machine that performs check-out processing of the commodity on a basis of the registration information generated by the commodity registration machine,
• the commodity registration machine including
• a scanner that reads the commodity determination information from the commodity for acquiring the commodity determination information,
• a first input device that accepts an instruction to start the registration processing,
• a first communication device that communicates with an external computer to be connected to be communicable with the check-out machine or the check-out machine, and
• a first processor that
• determines, after the instruction to start the registration processing is accepted, whether or not a predetermined condition for permitting the check-out processing at the commodity registration machine is satisfied,
• generates, after the instruction to start the registration processing is accepted, the registration information of the commodity according to the commodity determination information read by the scanner,
• enables the first input device to accept selection of either one of the check-out processing at the commodity registration machine or the check-out processing at the check-out machine if it is determined that the predetermined condition is satisfied,
• performs check-out processing on a basis of the generated registration information if the first input device accepts selection of the check-out processing at the commodity registration machine, and
• causes the first communication device to send the generated registration information to the external computer or the check-out machine if it is determined that the predetermined condition is not satisfied and if selection of the check-out processing at the check-out machine is accepted by the first input device, and
• the check-out machine including
• a second communication device that receives the registration information generated by the first processor,
• a second input device that accepts an instruction to perform check-out processing with respect to the commodity, and
• a second processor that performs check-out processing on a basis of the registration information received by the second communication device if the second input device accepts the instruction to perform check-out processing.