China fast-food operator pilots face-recognition payments

The operator of KFC in China is rolling out a futuristic system of paying at a fast-food counter via facial recognition, as the country embraces the technology for everything from toilet paper to travel. 

The "Smile to Pay" system will allow customers at a healthier spin-off of KFC in the eastern city of Hangzhou to keep their wallets in their pockets after ordering on a machine.