In what year was the first commercial barcode scanner used in a retail store, revolutionizing point-of-sale systems?

Before smartphones and touchscreens revolutionized retail, point-of-sale systems underwent dramatic evolution. The development of these technologies fundamentally changed how merchants tracked inventory and processed transactions, creating the foundation for today's seamless shopping experiences. Test your knowledge about this pivotal innovation in retail history that transformed commerce forever!

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1974 (at Marsh Supermarket in Troy, Ohio)
1952 (at Woolworth's flagship store in New York City)
1981 (at Macy's Department Store in San Francisco)
1967 (at Selfridges in London)