WeChat opens its first unmanned store in Shanghai — ECNS — “Shoppers need to scan a QR code with their WeChat app to enter the store. Sensors at the exit detect the shopper’s selections and automatically charge their WeChat wallet when they go through a ‘payment door’… WeChat payment industry operations director Bai Zhenjie said it takes less than 0.1 seconds for a customer to pay a bill. He added that facial and image recognition technology may be adopted in the store in the future.”