How to Choose a Coffee Machine For Pods The pod machines read the barcode that is located on the top of each pod (which is a disc of pre-dosed, sealed ground coffee that is pressed between layers of filter paper). Simply insert it into the machine and push a button. https://coffeeeuk06401.imblogs.net/78214819/the-reason-why-you-re-not-succeeding-at-pods-coffee-machine