How to Choose a Coffee Machine For Pods The pod machines read the barcode that is on the top of the pod (which is actually an un-sealed disc of pre-dosed ground coffee that is pressed between two layers of filter paper). Simply insert it and then press the button. This https://coffeee41931.blogdanica.com/28262309/think-you-re-ready-to-start-pods-coffee-machine-answer-this-question