| 摘要 |
PURPOSE:To let a customer have a chance to confirm a secret code, and also to gain time for reporting a loss of a card when it has been stolen, by deciding it a proper one in case when the number of times of input of the same customer's secret code is within the prescribed number of times, or in case when a constant interval of time has passed. CONSTITUTION:A customer discriminating information read out by a card reader 21, and a secret code inputted by a ten key 22 are inputted to a CPU11, and a processing data of an RAM30 is decided by a program of an ROM15. The RAM30 is provided with a setting area 32 of a constant interval of time when the transaction processing by the next input can be received, a setting area 33 of the number of times of input which can be received unconditionally, and a buffer area 31 containing the respective storage area 313, 312 of both the number of times of an input error of the secret code and the lastest time of the input error. In this state, in accordance with a combination table 34, whether the number of times of the same customer's input is within the prescribed number of times of an area 33, or whether the present input time is after a constant interval of time of an area 32 or longer has passed from the time of the area 312 is decided, and in case when said number of times is within the prescribed number of times, or said constant interval of time or longer has passed, the secret code is decided as a proper one. |
