Smile-to-pay: Chinese shoppers turn to facial payment technology

New technology is rolling out across the country, despite concerns over privacy

China's shoppers are increasingly purchasing goods with just a turn of their heads as the country embraces facial payment technology.

In a country where mobile payment is already one of the most advanced in the world, customers can make a purchase simply by posing in front of point-of-sale (POS) machines equipped with cameras, after linking an image of their face to a digital payment system or bank account.