Self service is the practice of serving oneself, usually when purchasing items. Common examples include many gas stations, where the customer pumps their own gas rather than have an attendant do it (full service is required by law in New Jersey, Oregon, and Richmond, British Columbia, but is the exception rather than the rule elsewhere). Automatic Teller Machines (ATMs) in the banking world have also revolutionized how people withdraw and deposit funds; most stores in the Western world, 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.