It wouldn't be "invisible to detection". All one would have to do is run a basic test pass on the system (such as running ballots through - using controlled numbers of ballots, etc...) in order to detect "anomalies"...
It wouldn't be too hard to come up with some controlled tests to determine the accuracy of any given electronic voting machine... Even without the source code.
In fact, most testers I know never have access to the source code, and have to find anomalies, deviations, bugs etc... just by running the compiled code.
DUers are morons.
Thanks for your input... you're right, no way the boxes didn't go through extensive testing, and would it also not be possible to decipher the compiled code?
That affidavit looked like it was written by someone who got through community college Visual Basic class but no more than that...