Codes
Well, I'm not sure I'd call it a system, really.
They are the radios we use at work (I'm in education at a public school).
In any case, they are MURS frequencies - absolutely no license or authorization required ... nor can authorization be denied.
It's a non-issue.
We just got the new radios and they arrived with the Privacy Code enabled - we weren't using Privacy Codes before (rural district, no other traffic).
I already checked them, BTW, and they are all on Privacy Code 1 (which is, of course, the default setting).
I probably should've just started with the default instead of making this so hard on myself!