The city of Moscow launched "Face Pay," a facial recognition fare system for their network of more than 240 metro stations in the city, Reuters reports. "Moscow is the first city in the world where this system is operating on such a scale," Maxim Liksutov, head of the the city's transport department, said. The Moscow metro system serves a population of 12.7 million people in Moscow. Using "Face Pay" as a way to pay your fare is not required, Liksutov added, and the previous payment methods will remain available.