Smile to get discounts in Tmall unmanned supermart
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A picture taken on December 2, 2017, shows goods in the supermart display on a stand shaped like cat ears. A terminal offers an even happier shopping experience by giving various discounts to customers who smile at it. A staff member explained it judges a customer's preference for goods by capturing their facial expressions; the bigger they smile, the more discounts they get. [Photo: IC]