This document discusses open digital badges and their potential use. It begins by providing context on open education initiatives and the concept of micro-credentials. It then defines digital badges, describing their elements and how they can represent achievements, goals and skills. The document outlines a pilot using badges in Moodle for an online course. It finds participants were interested in badges and the Moodle system performed as expected. It concludes by reflecting on principles for using technology in education and lists useful badge tools and projects.