Which of the following is NOT a primary function of smart shelf technology in modern grocery stores?

The food retail industry is undergoing rapid digital transformation with technologies that enhance inventory management and customer experience. One of the most innovative developments is the implementation of smart shelf technology, which combines IoT sensors, weight detection, and AI to track product movement and customer engagement. How well do you understand this emerging food retail technology trend?

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Automatically tracking inventory levels and alerting staff when restocking is needed
Displaying dynamic pricing that changes based on product freshness and expiration dates
Analyzing shopper behavior through facial recognition to create personalized in-store meal recommendations
Monitoring temperature conditions for perishable foods to ensure food safety compliance