I saw one attached to a vending machine in Germany. The vending machine sold alcohol and the ID scan was only for alcohol purchases. I live on the East Coast,

I saw one attached to a vending machine in Germany. The vending machine sold alcohol and the ID scan was only for alcohol purchases. I live on the East Coast, I've traveled around the country a fair bit, and I go to bars. I've only seen an ID scanner literally once in my life.