KFC in China tests letting people pay by smiling

Alipay has launched a new way to pay for your KFC in China — by smiling. So far, the facial payment system is only available at a single KFC in Hangzhou, China. The company behind the technology, Ant Financial, an Alibaba subsidiary, says its Smile to Pay technology needs about one to two seconds of facial scanning with a 3D camera and a “live-ness detection algorithm” to check the identity of the person paying, who must also enter their mobile phone number to help guard agains