How to Choose a Coffee Machine For Pods Pod machines work by reading the barcode on the top of the pod (which is actually an un-sealed disc of pre-dosed ground beans that are encased between two layers of filter paper). It is easy to insert it and press a button. https://coffeee-uk07504.eedblog.com/28409081/five-people-you-should-know-in-the-pods-coffee-machine-industry