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 the button. https://coffeeeuk69684.blogs100.com/28794981/10-misconceptions-that-your-boss-may-have-about-pods-coffee-machine-pods-coffee-machine