Which advanced feature is NOT currently implemented in smart shelf technology for food retailers?

Smart shelf technology is transforming how food retailers manage inventory and engage customers. These AI-powered systems can track product movement, monitor freshness, display dynamic pricing, and even personalize shopping experiences. As food retailers increasingly adopt these innovations to reduce waste and enhance customer satisfaction, how much do you know about this cutting-edge retail technology that's changing the grocery landscape?

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Real-time inventory tracking that automatically alerts staff when stock is low
Temperature monitoring to ensure proper storage conditions for perishable foods
Automatic ingredient substitution suggestions based on customer allergies
Digital price tags that can be updated remotely for dynamic pricing