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

Retail analytics and technology are transforming how stores track inventory and consumer behavior. Smart shelves represent one of the most innovative developments in this space, combining sensors, digital displays, and AI to create responsive retail environments. How well do you understand this emerging technology that's changing the face of retail operations? Test your knowledge about these data-driven solutions that are helping retailers optimize stock levels, reduce shrinkage, and personalize the shopping experience.

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RFID sensors for real-time inventory tracking
Blockchain-based transaction verification for each item removed
Weight sensors to detect product removal
Digital price displays that update dynamically