I found this article to be very thorough and both comments thus far invaluable.
A. Is there a way to observe the permitted park users as  (being given a small GIS tag when receiving permit,) one wears throughout their allotted time in the "park" and when they leave it is disposed of(?) and non permitted people would not have this, so, to make the officers work easier when they come upon campers. Is this too "modern," for the camping experience?

B.Maybe even an app on their phone that they can plug into once they receive their permit (#) and are in the park to assist park rangers/officers.