Which company launched the first fully automated, cashierless retail store concept called 'Just Walk Out' technology?

Cashierless stores represent one of the most significant recent innovations in retail technology, using a combination of computer vision, sensor fusion, and deep learning to create a seamless shopping experience. This poll tests your knowledge about which major retailer pioneered the first fully automated, checkout-free retail store concept that allowed customers to simply walk in, take products, and leave without traditional checkout lines.

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Amazon (with Amazon Go stores)
Walmart (with Walmart Now)
Alibaba (with Hema stores)
Target (with Target Express)