Which IoT retail innovation was first to achieve widespread adoption and demonstrated an average 30% reduction in energy costs for major retailers between 2017-2020?

Internet of Things (IoT) technology is transforming modern retail environments in remarkable ways. From inventory management to customer experience, IoT devices are creating unprecedented efficiencies and insights for retailers. This trivia question tests your knowledge about a groundbreaking IoT implementation that significantly reduced operational costs across the retail sector. How well do you understand the cutting-edge applications of connected technology in today's retail landscape?

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Smart shelves with weight sensors and automatic reordering capabilities
Smart HVAC systems with AI-powered temperature and occupancy optimization
RFID-based inventory tracking systems with real-time stock visibility
Automated checkout systems using computer vision and sensor fusion