In banks, computer store information about the money held by each customer and enable staff to access large databases and to carry out financial transactions at high speed. They also control the cashpoints, or ATM (Automatic teller machines), which dispense money to customers by the use of a PIN-protected card to pay for goods and services. Instead of using a signature to verify payment, customers are asked to enter a four digit personal Identification number used at cashpoints; this system make transaction more secure. With online banking, clients can easily pay bills and transfer money from the comfort of their homes.