Have you ever wondered, how it would be to use facial recognition in coffee vending machine to brew the coffee?

The technology now a days allow to install facial recognition in vending machine to brew the coffee of your choice. How?
The algorithm in the machine record and memorize the choice made by the individuals at time. And when they opt for drink at another time the machine identifies the individual and recommend itself the choice that are apt for the individual (with the help of recorded data).

Latest Twitter feed shows that around the globe some outlets uses facial recognition to provide soft drink service and make payment so that customers need not to carry cash with them.