Which groundbreaking invention, first used commercially in 1974 at a Marsh Supermarket in Ohio, revolutionized retail point of sale systems and is considered the precursor to modern checkout technology?

The modern shopping experience relies heavily on Point of Sale (POS) systems that have evolved dramatically over decades. Before touchscreens and cloud computing, the retail world was transformed by key technological breakthroughs that changed how merchants processed transactions. Test your knowledge about the invention that fundamentally changed retail operations and set the foundation for today's sophisticated POS landscape.

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• The Universal Product Code (UPC) barcode scanner
• The electronic cash register by NCR Corporation
• The magnetic stripe card reader
• The digital receipt printer by Epson

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