Which retail innovation, patented in 1951 by Norman Joseph Woodland and Bernard Silver, revolutionized inventory tracking and is now used on virtually every retail product worldwide?

Throughout history, retail innovations have transformed how we shop and consume products. Some inventions have completely revolutionized the retail landscape, changing consumer behavior forever. This trivia question focuses on one such groundbreaking innovation that dramatically altered the retail experience and created new possibilities for product discovery and purchase. Test your knowledge about this significant retail technology milestone!

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Barcode/UPC (Universal Product Code)
Credit card magnetic stripe
Electronic anti-theft tag
Self-checkout kiosk