Which groundbreaking retail invention, first used commercially in 1974 at an Ohio supermarket, fundamentally transformed inventory tracking and is considered the precursor to modern e-commerce systems?

The retail landscape has been transformed by numerous technological innovations throughout history. These breakthroughs have changed how consumers shop and how businesses operate. This trivia question explores a significant invention that revolutionized retail operations and inventory management, paving the way for modern e-commerce and efficient supply chains. Test your knowledge about this landmark development in retail technology!

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The Universal Product Code (UPC) barcode scanning system
The electronic point-of-sale (EPOS) terminal
The magnetic stripe credit card reader
The automated teller machine (ATM) for in-store banking