Which of the following is NOT a common feature of smart shelf technology in modern grocery stores?

In today's competitive food retail landscape, technological innovations are transforming how grocery stores manage inventory and engage with customers. Smart shelf technology represents one of the most promising developments in this space, offering real-time data and enhanced shopping experiences. This trivia question tests your knowledge about this cutting-edge retail innovation that's changing how we shop for food.

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Automatic temperature monitoring for perishable food items
Real-time inventory tracking that alerts staff when restocking is needed
Automatic taste testing capabilities for quality control
Digital price displays that can be updated remotely