Which feature is NOT currently a standard capability of IoT-enabled 'smart shelves' in modern grocery stores?

The food retail landscape is rapidly evolving with Internet of Things (IoT) technology transforming how products are displayed, monitored, and sold. Smart shelves represent one of the most significant IoT innovations in grocery stores, offering real-time inventory management, dynamic pricing capabilities, and enhanced customer experiences. How well do you understand the capabilities and adoption of this cutting-edge retail technology in the food industry?

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Automatic inventory tracking that alerts staff when products need restocking
Dynamic pricing that changes based on product freshness and expiration dates
Customer recognition that displays personalized nutrition recommendations based on previous purchases
Temperature monitoring for refrigerated and frozen food displays