While nothing is foolproof, a funny story to put this point of "fingerprinting" and "background checks" into perspective...
I was attacked in the early 1970s, ran from my attacker the moment he let go, and have not stopped running since. Rather than hiking, camping, rock-climbing, and ice-climbing, I focused on drinking and trumpet playing. (I stopped drinking in 2005, simply because my age made it impossible for me to keep drinking.)
I spent quite a bit of those 30+ years camping. While I lacked the proper back-country camping permits required by the authorities, the rangers and n