Which technology is NOT typically integrated into modern grocery store 'smart shelf' systems?

The food retail industry is rapidly adopting innovative technologies to enhance supply chain efficiency and customer experience. One of the most transformative retail innovations in recent years is the implementation of smart shelf technology in grocery stores. These IoT-enabled systems are changing how inventory is managed and how customers interact with products. Test your knowledge about this cutting-edge retail innovation that's reshaping the food industry landscape.

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Weight sensors that automatically detect when inventory is low and trigger reordering
Digital price tags that can be updated remotely in real-time based on demand
Taste-testing sensors that analyze food freshness and quality
Temperature monitoring for refrigerated sections to ensure food safety compliance