Which revolutionary retail technology, invented in 1974, was first used commercially on a pack of Wrigley's chewing gum and now forms the backbone of most loyalty programs and inventory systems?

The world of retail was forever transformed by technological innovations that streamlined inventory tracking and management. These discoveries not only revolutionized how retailers operate but fundamentally changed the customer experience. This trivia question explores a pivotal invention that bridged the gap between physical products and digital tracking systems, creating the foundation for modern retail technology and loyalty programs we see today.

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Universal Product Code (UPC) / Barcode
Radio-Frequency Identification (RFID) tags
Electronic Article Surveillance (EAS) tags
Near Field Communication (NFC) chips