I have seen some discussion about private repeaters that folks have put up, that they do not want the masses to have access to. So they keep the tones private, unless someone is in their group or sometimes they charge money for access. I understand the moral implications to my question, but I am curious from a strictly technical point of view...
If I find a repeater that's access tones are private, why cant I just scan for the codes, assuming I know when someone is transmitting, and eventually gain access to that repeater?