Which IoT technology first allowed retailers to track customer movements within physical stores similar to how websites track user navigation patterns?

The Internet of Things (IoT) is transforming the retail landscape in unprecedented ways. From inventory management to personalized shopping experiences, retailers are leveraging connected devices and data analytics to revolutionize how consumers interact with brands. This trivia question focuses on a landmark IoT innovation that changed how retailers track customer behavior in physical stores. Test your knowledge about this technological breakthrough that bridged the gap between online analytics and brick-and-mortar shopping insights.

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Bluetooth Low Energy (BLE) beacons
RFID shelf tags
Smart shopping carts with GPS
NFC payment terminals