Which revolutionary retail technology was first successfully used at an Ohio supermarket in 1974, fundamentally changing how products are tracked and sold?

The way we shop has transformed dramatically over the decades, with certain innovations completely revolutionizing the retail experience. One particular technology changed retail forever by automating the checkout process and inventory management. This invention marked a pivotal moment in retail history, creating efficiency for businesses and convenience for customers. Test your knowledge about this groundbreaking retail innovation that we now take for granted in nearly every store worldwide!

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The UPC barcode scanner
The electronic cash register (ECR)
The self-checkout kiosk
The magnetic stripe card reader