Which supermarket was the first to use a UPC barcode scanner for a commercial transaction, marking the beginning of modern checkout technology in June 1974?

Before the digital age transformed shopping forever, one innovation fundamentally changed how we complete transactions in retail stores. This invention eliminated manual price entry, reduced errors, and dramatically increased checkout speed. Today, we take this technology for granted in virtually every store we visit, but when it debuted in the early 1970s, it represented a revolutionary shift in retail operations. Test your knowledge of this pivotal retail innovation that bridges the gap between traditional commerce and our modern shopping experience.

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Marsh Supermarket in Troy, Ohio
Kroger Supermarket in Cincinnati, Ohio
Safeway Store in Oakland, California
A&P Supermarket in New York City, New York