ATM is the abbreviation of Automated Teller Machine, which means Automatic Teller Machine. It is a highly sophisticated mechatronics equipment, which uses magnetic cards or smart ic cards to store user information, inputs passwords through an encrypted keyboard (EPP), and then verifies and conducts various transactions through the bank's internal network. The emergence of ATM reduces the working pressure of bank counter staff and provides a safe and convenient financial service experience for human beings.