Which IoT technology first revolutionized retail inventory management in the 1970s before becoming the universal standard for product tracking in stores worldwide?

The Internet of Things (IoT) is transforming retail operations in remarkable ways. From inventory management to customer experience, IoT technologies are creating the 'smart stores' of tomorrow. This trivia question tests your knowledge about a pioneering IoT technology that revolutionized retail inventory tracking and is now ubiquitous in the industry. Do you know your retail tech innovations well enough to identify this game-changing technology?

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RFID (Radio-Frequency Identification) tags
UPC (Universal Product Code) barcodes
NFC (Near Field Communication) chips
Bluetooth Low Energy (BLE) beacons