Which pioneering retail invention, first introduced in 1937, revolutionized shopping by allowing customers to select their own merchandise without clerk assistance?

Before the 1930s, grocery shopping was a completely different experience. Store clerks would fetch items for customers from behind counters, packaging goods to order. This all changed with one revolutionary invention that transformed retail forever, creating the foundation for modern shopping experiences. Test your knowledge about this pivotal moment in retail history that fundamentally altered consumer behavior and store operations.

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• The shopping cart, invented by Sylvan Goldman in Oklahoma City
• The barcode scanner, invented by Norman Joseph Woodland at Drexel Institute
• The automatic door, invented by Hortense Odlum for Bonwit Teller
• The cash register with receipt printing, invented by John Patterson at NCR

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