Which IoT feature in modern smart refrigeration systems has shown the greatest impact on reducing food waste in grocery stores?

The food retail industry is undergoing a technological transformation with IoT solutions changing how perishable products are managed and sold. Smart refrigeration systems are now capable of monitoring temperatures, tracking inventory, and even alerting staff about potential issues before they affect food quality. How much do you know about the cutting-edge IoT technology that's revolutionizing food preservation in retail?

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Predictive analytics that forecast product shelf-life based on real-time temperature fluctuations and environmental conditions
Facial recognition systems that track customer interaction with refrigerated products
Automated social media alerts when new products are added to refrigerated sections
Voice-activated temperature controls allowing shoppers to customize display case temperatures