Which of the following is NOT a current capability of AI-powered smart shelves in grocery stores?

Modern grocery stores are increasingly adopting artificial intelligence solutions to enhance customer experience and optimize operations. One of the most innovative technologies transforming food retail is smart shelf technology, which uses weight sensors, cameras, and AI algorithms to track inventory in real-time, detect shoplifting, and even analyze customer behavior. How much do you know about this cutting-edge retail AI application that's changing how we shop for food?

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Automatically adjusting digital price tags based on inventory levels and expiration dates
Detecting when items are running low and sending restocking alerts to staff
Analyzing shopper facial expressions to determine satisfaction with products
Monitoring temperature conditions for sensitive food products