Send e-mail with your name, country where do you live, age and answer these questions:
– Did you ever participated in any of our projects?
– Do you generally check our twitter, facebook or instagram page?
– What do you think of our webpage?
If you already are a member and want to have your credential you can request yours. You need to have participated in at least 2 or 3 of our projects and be active on any of our social networks.
You can find the list of our projects here.