By 2017, facial recognition was developing quickly in China and was beginning to become embedded in payment and other systems. The Chinese startup Face++, valued at roughly $1 billion, supplies facial recognition software to Alipay, a mobile payment app used by more than 120 million people; the dominant Chinese ride-hailing service, Didi; and several other popular apps. The Chinese search engine Baidu is working with the government of popular tourist destination Wuzhen to enable visitors to…