Which of the following is NOT a common feature of IoT-enabled smart shelves in modern grocery stores?

The food retail industry is increasingly adopting Internet of Things (IoT) technologies to enhance customer experience and improve inventory management. Smart shelves represent one of the most significant IoT innovations in grocery stores, helping to reduce waste, monitor freshness, and ensure product availability. This poll tests your knowledge about this cutting-edge retail technology that's changing how we shop for and sell food products.

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Automatic inventory tracking that alerts staff when products need restocking
Temperature and humidity monitoring for perishable food items
Autonomous cooking capabilities for ready-to-eat food samples
Digital price tags that can be updated remotely in real-time