Hi Frankie,
We are aiming at integrating this feature into Moodle core. So, it is not a separate plugin or module.
Yuliya
I'm pleased to report that Open Badges has been integrated into Moodle in time for the 2.5 release (the next major release).
Now that it is part of core Moodle it has it's own discussion forum:
https://moodle.org/mod/forum/view.php?id=8085
So I'd encourage you to subscribe and post any new questions or ideas there.
Simon