[Knitebane]

As a com-sec and IT professional that has audited the security of vast numbers of commercial and military systems over the last 20 years, I can tell you that no solution can be made completely secure and reliable. You can only mitigate the risks.

Electronic-only systems are not only vulnerable to being compromised but highly vulnerable to being compromised with out the compromise being detected.

Of all of the automated voting systems I've seen, the electo-optical systems had the most resilience. The ballot is marked with an indelible marker and the vote counter scans the ballot. In the case of a problem, all of the ballots can be recounted electronically or manually. This removes the electronic system as the single point of failure.

[M-cubed]

This removes the electronic system as the single point of failure.<<<...Bingo!..we have a winner!