Digital portfolios can provide a space where evidence of a learner's competency is stored and digital badges can be used in their portfolios as valid indicators of accomplishment, skill, knowledge, or interest. The authors issued "digital badges" to our students who successfully completed the modules of a Medical English Terminology course we developed on Moodle by using its badge function. The badges which students earned for the course were designed to function as a validated indicator of students' achievements to demonstrate to their teachers. We anticipated that the use of badges would not only help the learners confirm their achievements for the course but also help motivate them toward further autonomous study. Through a reflective questionnaire about the use of badges, about 77.5% of the students found the badge assessment system comprehensible and the great majority of students (87.2%) were satisfied with their study through this course. The questionnaire results also showed that 67.6% of the students found the use of badges helpful in confirming their course achievements and 63.7% of them found that earning badges helped motivate them toward further autonomous study. These findings indicate that while there is still room for improvement, the use of digital badges has the potential to provide students with opportunities to celebrate their achievements and enhance their learner autonomy for online self-study courses. [For the complete proceedings, see ED579282.]