Automated Teller Machine(ATM machines, exchange ATM, cash ATM, cyber ATM, outdoor ATM, BTM) is a highly sophisticated mechanic-electronic device that uses magnetic cards or smart cards to automate self-service financial transactions instead of working at a bank counter. An ATM can withdraw cash, check of the deposit balance, transfer funds between accounts, balance inquiry and so on; It can also make cash deposit (real-time accounting), check deposits, passbook replacement, intermediate business transaction. The cardholder can use credit card or savings card, according to the password for automatic withdrawal, to check the balance, transfer, cash deposit, passbook replacement, purchase funds, change password, pay mobile phone bill and other business operations etc.