The world's biggest camera-operated autonomous store has opened in Shanghai. This is how it works. The world's biggest camera-operated autonomous store has opened in Shanghai. This is how it works. Grace DeanFeb 28, 2021, 22:52 IST AiFi's cameras can detect thousands of different products.AiFi AiFi launched the world's biggest camera-operated autonomous store in Shanghai. cashierless stores where purchases are tracked by AI. Steve Gu, AiFi's CEO, told Insider how this works. Autonomous retail software provider AiFi has just launched what it says is the world's largest computer vision-powered store in Shanghai, China. The 4,000 square-foot store uses a series of cameras to track customers so that they can walk in and out of the store without using a till.