The article and discussion here both miss what I consider a more important issue with the EZ-pass system:
There is no way to know who else is tracking the EZ-pass transponders.
The transponder should have a audio and/or visual indicator whenever it is read. How else can you know that Big Brother is only reading the transponder for its intended use and instead isn't reading it in other locations for other purposes.
There should also be an off switch on the unit although I can see that causing more problems with people forgetting to turn it back on before traveling through EZ-pass lanes.
I've never been lost; I was once bewildered for three days, but never lost! -- Daniel Boone