Which IoT technology first enabled major retailers like Walmart and Amazon to achieve near-perfect inventory accuracy (99%+) and reduce stockouts by more than 30%?

The Internet of Things (IoT) has dramatically transformed the retail landscape in recent years. From smart shelves that monitor inventory in real-time to beacons that personalize the shopping experience, retailers are embracing these technologies to enhance operations and customer engagement. This trivia question explores a groundbreaking IoT innovation that changed how major retailers approach inventory management—can you identify which pioneering technology truly revolutionized retail stock tracking?

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RFID (Radio-Frequency Identification) smart tags
Computer vision cameras with AI product recognition
Weight-sensing smart shelves
Bluetooth Low Energy (BLE) beacons