How to Choose a Coffee Machine For Pods The pod machines read the barcode that is on the top of the pod (which is actually a sealed disc pre-dosed ground beans that are encased between two layers of filter paper). It is easy to insert it and press the button. https://wwwcoffeeeuk39989.blogocial.com/pods-coffee-machine-what-s-the-only-thing-nobody-is-discussing-64432539