Automated Teller Machine is known as ATM. It is such an electronic machine by which a customer can perform/utilize different banking facilities such as – withdrawal of cash, enquiry for account balance, payment of bills and transfer of money. This machine provids round-the-clock services. For the use of this, a customer has to go to ATM machine. He has to insert ATM/Debit card into the ATM system. The system asks for a pin number as an alternative identity proof with the secret pin number being correct, the ATM system provides permission to execute transactions.