Which IoT technology was first successfully implemented in retail in 1974, revolutionizing inventory tracking and eventually becoming ubiquitous in modern shopping?

The Internet of Things (IoT) has transformed the retail landscape with groundbreaking innovations that connect physical objects to digital networks. From inventory management to customer experience, IoT devices have created unprecedented opportunities for retailers. This poll tests your knowledge about a significant IoT innovation that revolutionized retail inventory management and customer convenience. Do you know which technology marked a true turning point in how products are tracked and purchased?

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RFID (Radio-Frequency Identification) tags
Universal Product Code (UPC) barcode scanning
NFC (Near Field Communication) payment systems
Electronic Shelf Labels (ESL)