Which retail technology innovation, first used commercially in 1974 on a pack of Wrigley's gum, is estimated to save the retail industry over $18 billion annually through improved efficiency?

The retail landscape has been dramatically transformed by technology over the decades. From the introduction of barcodes to AI-powered shopping experiences, technological innovations have revolutionized how retailers operate and how consumers shop. This trivia question tests your knowledge about a pivotal technological advancement that changed retail forever.

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Universal Product Code (UPC) barcode scanning
Electronic point-of-sale (EPOS) systems
Radio-frequency identification (RFID) tags
Electronic shelf labels (ESL)