MUTUALITY IDENTIFICATION METHOD OF CASH AUTO RECEIPT-DISBURSEMENT SYSTEM

The mutual status certification method of automated-teller machine(ATM) is characterized by certifying mutual status between a dealer and an ATM by that: every financial dealer registers its own secret number to a banking organ and is endowed with a peculiar status certification key capable of checking the justice of the ATM by the banking organ, and transacts by receiving a card where the key is recorded; the ATM proves its own justice by showing after solving the key recorded in the card in dealing; and the dealer proves his justice by inputting his account secret number.