PROBLEM TO BE SOLVED: To charge and settle at a time.SOLUTION: A registration program causing a computer to execute a process of: calculating a total amount of purchased items when accepting registration of the purchased items; referring to a storage part storing electronic money identification information and balance information in association with each other when acquiring certain electronic money identification information; comparing the balance associated with the certain electronic money identification information with the total amount of the purchased items; and transmitting the total amount of the purchased items and the certain electronic money identification information to a specified settlement device according to a result of the comparison.SELECTED DRAWING: Figure 8
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