I think most of us have no problem paying landing fees if we land or use the facilities provided at an airport. Same goes for use of navaids that are provided by local airport operators. THis example though is taking a fairly liberal interpretation on the term "AD Charges".
For those that think it is clever to adopt either the radio silence or borrowed callsigh approach,
more and more airports are making use of video surveillance at the taxiway exits off runways.