Which IoT innovation has most significantly reduced inventory shrinkage in transportation retail locations (airports, train stations, etc.) according to 2023 industry data?

The transportation industry is being transformed by Internet of Things (IoT) technology, especially in retail applications. From inventory management to customer experience, IoT is reshaping how transportation retailers operate. This poll tests your knowledge about a significant IoT innovation that has dramatically improved efficiency in transportation retail operations. Can you identify the correct IoT application that has revolutionized this sector?

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RFID-integrated smart shelving that automatically tracks inventory in real-time and alerts staff to potential theft events
Facial recognition systems that identify returning customers and personalize digital signage based on previous purchases
Autonomous cleaning robots that patrol retail spaces during closing hours to maintain hygiene standards
Voice-activated kiosks that allow travelers to place orders without touching surfaces in high-traffic areas