Which retail technology implementation holds the Guinness World Record for 'Largest Automated Retail System'?

Test your knowledge about groundbreaking retail technologies that have earned world records! In today's rapidly evolving retail landscape, companies are constantly pushing boundaries with innovative solutions that transform how we shop. Some retail tech advancements have been so revolutionary they've earned official recognition in the record books. Can you identify which technological retail breakthrough holds this particular distinction?

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Amazon Go's computer vision and sensor network (Seattle, USA)
JD.com's fully automated warehouse with 300+ robots (Shanghai, China)
Alibaba's Hema supermarket facial recognition payment system (Hangzhou, China)
Ocado's grid-based automated fulfillment system (Andover, UK)