TRANSACTION SYSTEM, TRANSACTION DEVICE, BALANCE TRANSFER DEVICE AND BALANCE TRANSFER PROGRAM STORAGE MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a convenient and low-risk transaction system. SOLUTION: In the transaction system 100, both of a main card 40 for which a personal identification number is required and a simple card 50 for which no personal identification number is required are used in the case of commercial transaction, a dealer card update device 10 performs the commercial transaction on requesting input of the personal identification number when the card is the main card 40 and performs a commercial transaction without requesting the input of the personal identification number when the card is the simple card 50.