Which retail innovation was first tested at an Ohio supermarket in 1974, scanning a pack of Wrigley's gum, and now processes over 5 billion transactions daily worldwide?

The retail landscape has been transformed by numerous technological innovations throughout history. One of the most impactful yet often overlooked innovations revolutionized how stores track their merchandise. This seemingly simple invention drastically reduced checkout times, improved inventory accuracy, and eventually enabled the big data analytics that power today's retail experiences. Test your knowledge about this groundbreaking retail technology that changed commerce forever!

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• The Universal Product Code (UPC) barcode system
• Radio-frequency identification (RFID) tags
• Electronic shelf labels (ESL)
• Near-field communication (NFC) payment terminals

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