MY USA TODAY COLUMN: Paper ballots are hack-proof. It’s time to bring them back. “Perhaps it’s time to mandate paper ballots, and to also legally require other steps to ensure election integrity. Vote-counting systems should be transparent, and regularly audited. Voter ID should be strictly enforced, as it is in all advanced democracies to ensure that only eligible voters vote. And voter registrations should be audited frequently to ensure the removal of voters who have died or moved away. Maybe we should even dye voters’ fingers to prevent revoting, as is done in many other countries. There’s no way to hack that.”