I didn't remember reading anything about these being "officially" for anything, just a fun thing to have or show your friends. Fortunately they can look awefully official and would probably get you into [i]some[/i] events. maybe.
huh...i believe you can get those made at big huge labs they have a bunch of flickr "toys" as they call them. that's also where "scout" is, a device that finds what pictures you have [if any] in flickr's explore
maybe i'll make one and wear it around my neck wherever i go ;-)
I'd actually be careful about taking photos without a photographer's license.
I wrote some poetry once. I didn't really have poetic license at the time, and I was questioned by the authorities for several hours before they let me go. Since then, I've been really careful to register as a poet and keep my poetic license up to date.
I actually had an official press pass at one point in my life. It was issued by the State and I used it to get awfully close to the stage line when I went to big conferences out of State and out of country. Not sure if MN issues these things (you had to have officially worked for a newspaper or magazine), the one I had was issued by TN.