Which pioneering IoT technology did Amazon first introduce in their Amazon Go stores that revolutionized the checkout experience?

The Internet of Things (IoT) has transformed the retail landscape, creating new ways for stores to track inventory, interact with customers, and optimize operations. From smart shelves to automated checkout systems, retailers are leveraging connected devices to enhance efficiency and customer experience. How well do you understand the key innovations driving this retail technology revolution? Test your knowledge about the cutting-edge IoT implementations reshaping the shopping experience worldwide.

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Just Walk Out technology (computer vision and sensor fusion)
RFID-enabled smart shopping carts
Blockchain-based digital receipt system
NFC payment terminals with biometric authentication