Which revolutionary retail innovation, first used commercially in 1974 at an Ohio supermarket, fundamentally changed checkout systems worldwide?

The way we shop has been transformed by numerous innovations throughout history. From the introduction of barcodes to contactless payments, retail technology has continuously evolved to enhance customer experience and business efficiency. This trivia question focuses on a pivotal invention that revolutionized the retail landscape and set the foundation for modern checkout systems. Test your knowledge of retail history and technological breakthroughs!

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