McDonald's using Amazon face recognition on its drive-through customers:
"That’s the experience McDonald’s has been rolling out to a growing number of its drive-thru locations. Using multiple AWS services for data management and machine learning, McDonald’s provides drive-thru customers with recommendations based on a variety of factors including past orders, location, and time of day."
https://aws<dot>amazon<dot>com/blogs/industries/aws-is-how-mcdonalds-transforms-the-drive-thru-experience/