Which retail innovation, invented in 1952 by Norman Joseph Woodland and Bernard Silver, was first used commercially in 1974 and is now scanned over 6 billion times daily worldwide?

The retail landscape has been transformed by numerous technological innovations throughout history. Some inventions have so fundamentally changed how we shop that we can barely imagine life without them. This trivia question focuses on a pivotal retail technology breakthrough that revolutionized inventory management and customer checkout experiences worldwide. Test your knowledge about this game-changing retail discovery!

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The Universal Product Code (UPC) barcode system
The electronic point-of-sale (EPOS) terminal
The RFID inventory tracking tag
The magnetic stripe card reader