KFC China's new 'Smile to Pay' system lets customers pay for their orders by simply smiling into a kiosk, and second later the computer will identify you as it analyzes over 600 facial features in order to match them to the photo ID stored on the Alipay system. KFC China includes a "live-ness detection algorithm" which stops people from scamming the system if they were wearing wigs or heavy make up.
Jidong Chen, Ant's Director of Biometric Identification Technology explains: "Combined with a 3D camera and liveness detection algorithm, Smile to Pay can effectively block spoofing attempts using other people's photos or video recordings and ensure account safety".
This means that KFC customers in China don't need cash, cards, or even a smartphone - all they need to do is enter in their phone numbers as an additional layer of security once the system identifies them. Impressive stuff, KFC China.