NYT Notes Flaws In Current Electronic Voting Methods
there is no compelling argument, NO COMPELLING ARGUMENT to use anything more than I'd extend your point 3 to require that the optical scanner's be installed in someones skull. In Scotland we replaced our age old, reliable 10,000 grannies in sportshalls approach to vote counting with optical scanners this year. The result was a complete farce with thousands of votes being declared void. Human eyeballs are the best scanner and with appropriate oversight the fairest vote counting mechanism IMHO.
3. optical scanner