Which innovative feature is NOT currently available in commercial smart shelf technology for retail environments?

Smart shelf technology is transforming retail inventory management and customer experience. These AI-powered systems can track product levels, monitor expiration dates, display dynamic pricing, and even interact with shoppers' smartphones. As retailers invest in digital transformation, understanding these innovations has become essential for professionals in retail strategy and operations. Test your knowledge about this cutting-edge retail technology!

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Real-time weight sensors that automatically detect low stock and trigger reordering
Facial recognition that identifies individual shoppers and displays personalized pricing based on their purchase history
Electronic shelf labels (ESLs) that can change prices dynamically based on inventory levels and time of day
RFID and computer vision integration that tracks products removed from shelves for cashierless checkout