Before registering for any courses at any level, please prepare your transcript and entrance exam bla bla, so as to be "official". We love you, and competition and exclusion are not in our vocabulary but the government perhaps is more concerned with paperwork than we are. And remember, the better you look, the better we look. These green cards should actually probably be metal dog tags that you could wear around your neck, like in the military, that way it's harder to lose. You could even clip them to a rosary if you wear one (like some of us do). Also, if we know the person who makes them by hand, it's impossible to forge because the person would know. They would know if you were kind to the earth or not, and if you are kind to the earth, the likelihood is that you will be kind in general. The contrary is also true.