From computerized carts to "Chef Bots," how AI is becoming a bigger part of grocery shopping

In 1937, two decades after founding his first Piggly Wiggly, supermarket entrepreneur Clarence Saunders opened Keedoozle, a "fully-automated grocery store." Groceries were offered at a steep discount and sample items were displayed in glass cabinets. "To purchase, the customer will insert a key in a hole in the showcase beside the sample article, press a button," TIME Magazine reported at the time. "In the stockroom the proper article will drop on a conveyor belt leading to the cashier's desk. Simultaneously the purchase price is recorded on an adding machine. After all purchases are made, the customer sticks his key into the adding machine, gets his bill. Using another key, the cashier releases the purchases all wrapped for the customer."