Settlement module, settlement method, program, information recording medium, settlement apparatus, and settlement apparatus control method

摘要

Provided is a payment module capable of reducing the probability that a balance of each electronic value that is usable for a payment becomes insufficient when the payment is made. An IC chip (22) stores one or more electronic values and a utility electronic value exchangeable from each of the one or more electronic values. The IC chip (22) subtracts, from a balance of the utility electronic value, an amount of money that is equal to or more than a difference between a payment amount and a balance of one electronic value used for a payment among the one or more electronic values. The IC chip (22) adds the amount of money subtracted from the balance of the utility electronic value to the balance of the electronic value used for the payment, and subtracts the payment amount from the resultant balance of the electronic value used for the payment.