How to Choose a Coffee Machine For Pods Pod machines operate 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 push a button. https://www-coffeee-uk39309.mpeblog.com/51537040/10-things-we-all-love-about-pods-coffee-machine