Which key technology does NOT form part of Amazon Go's 'Just Walk Out' shopping experience?

Amazon revolutionized physical retail with its checkout-free Amazon Go stores, first opened to the public in 2018. These stores use advanced AI technologies including computer vision, deep learning, and sensor fusion to eliminate traditional checkout processes. This 'Just Walk Out' technology has since been adopted by other retailers and represents one of the most significant retail innovations in recent years, fundamentally challenging conventional assumptions about the shopping experience.

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RFID tags on all products
Computer vision
Deep learning algorithms
Weight sensors on shelves