Which groundbreaking invention, first commercially used in 1974, fundamentally transformed product return tracking and recall management in retail?

Product recalls and return policies have dramatically evolved alongside technological innovations. In the early days of retail, returns were often impossible or highly restricted. Modern innovations have transformed how companies handle product issues, creating entire systems dedicated to customer satisfaction and product integrity. This poll tests your knowledge about a pivotal invention that revolutionized how retailers track and manage returned merchandise.

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The Universal Product Code (UPC) barcode system
Electronic Data Interchange (EDI) networks
Radio-frequency identification (RFID) tags
Digital receipt technology