We've had voting machines since the mid '60s on a regular basis if not before. I would say most machines are optical readers, leaving a paper trail.
Getting rid of mail in ballots disenfranchises poor citizens, Ones that cannot afford to take the time off to stand in line at a polling place, do not have the means of getting there, or have employers that will not allow time off.
If you are going in that direction then declare it a national holiday, mandate that all businesses must be closed on election days and provide transportation for all who desire it. Also do away with absentee ballots. **** your planned vacation, if you want to vote, stay home. That includes all politician's as well.
The only people who think the current system is rigged are the ones trying to rig it