Self service is the practice of serving oneself, usually when purchasing items. Common examples inclue many gas stations, where the customer pumps their own gas rather than have an attendant do it (self-service gas pumping is illegal in New Jersey & Oregon); Automatic Teller Machines (ATMs) in the banking world have also revolutionised how people withdraw and deposit funds; most American stores, where the customer uses a shopping cart in the store, placing the items they want to buy into the cart and then proceeding to the checkout counter/aisles; or at buffet-style restaurants, where the customer serves their own plate of food from a large, central selection.