Self-service is a system whereby customers acquire (or serve) themselves goods or services, paying for the items at a point-of-sale, as opposed to a shop assistant or clerk acquiring goods or providing services in addition to taking payment. Common examples include ATMs, coin-operated laundrettes, self-service checkouts, self-service petrol stations, and buffet restaurants.
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Self service in the context of Queue area
Queue areas are places in which people queue (first-come, first-served) for goods or services. Such a group of people is known as a queue (British usage) or line (American usage), and the people are said to be waiting or standing in a queue or in line, respectively. Occasionally, both the British and American terms are combined to form the term "queue line".
Examples include checking out groceries or other goods with a cashier, at a self service shop, at an ATM, at a ticket desk, a city bus, or in a taxi stand.