How to Choose a Coffee Machine For Pods The pod machines read the barcode at 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). It is easy to insert it and push a button. Pop https://coffeee32356.tinyblogging.com/11-ways-to-completely-sabotage-your-best-pod-coffee-machine-72103643