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Clarence Saunders (August 9, 1881 – October 14, 1953) was an American grocer who first developed the modern retail sales model of self service. His ideas have had a massive influence on the development of the modern supermarket. Saunders worked for most of his life trying to develop a truly automated store, developing Piggly Wiggly, Keedoozle, and Foodelectric store concepts.