"Robert M. Gary" wrote in message
oups.com...
For example, the EZ pass electronic transponder system for autos could be
easily be extended to small planes.

That only tells you the aircraft, not the pilot. How are FBOs going to
gather up all of the previous month's pilots and send out a bill (after
figuring out who flew from 1-2 vs 2-3pm). Some of those pilots only
came to the U.S. for a month or so to fly. so the FBO is screwed.
The transponder would HAVE to ID the pilot, NOT the aircraft.

That's total crap!
As a foreign visitor there is no difficulty sorting out user fees. The
flying log says who was flying when and as we mostly pay by credit card then
the FBO would have the authority to debit our cards for the fees.