How to Choose a Coffee Machine For Pods Pod machines work by reading the barcode that is on the top of the pod (which is actually an un-sealed disc of pre-dosed ground coffee compressed between two layers of filter paper). It is easy to insert it and push a button. https://wwwcoffeeeuk19278.blogerus.com/51053003/17-signs-that-you-work-with-pods-coffee-machine