Which product innovation, first implemented in a grocery store in 1974, revolutionized retail operations by eliminating manual price entry and dramatically speeding up checkout times?

In the evolution of retail, certain product innovations have dramatically transformed how we shop. This trivia question explores one such revolutionary technology that fundamentally changed retail operations and customer experiences in the 20th century. Test your knowledge of retail history and the pivotal inventions that shaped modern commerce!

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UPC Barcode Scanner
Electronic Cash Register (ECR)
Credit Card Point-of-Sale Terminal
Self-Service Checkout Kiosk