Passengers allowed to use QR codes to enter Shenzhen Metro stations

A passenger has a smartphone-generated QR code scanned by a ticket machine before entering Futian Station of Shenzhen Metro in Shenzhen, south China's Guangdong Province, May 8, 2018. Passengers are allowed to use QR codes as electronic tickets to enter all stations of Shenzhen Metro starting from Tuesday. (Xinhua/Mao Siqian)