Buy with a Smile

KFC Just Started Letting Customers Pay In a Way That Could Change Everything    By Chris Matyszczyk   in Inc.  ....

Never, though, has one of the monolithic fast food brands tried what this KFC is doing.

As the South China Morning Post reports, a KFC-owned restaurant called KPRO -- an oddly healthy place that serves salads, panini and fresh juice -- is allowing customers to pay with a smile.

I tried getting away with something similar in one or two restaurants during my teens. It didn't work well, as the owners quickly demanded, well, money. Or else.

Here, though, you walk up to a large screen. You use a touchscreen to select the very healthy food you'd like to quickly consume.   Then you click on the Smile To Pay feature.   It uses facial recognition to decide who you are. .... " 

Also, more detail in The Verge.