A bad idea for little benefit. If it has to be done (and it should not be) the voter should make a selection and the machine should print a voting as slip, the

A bad idea for little benefit. If it has to be done (and it should not be) the voter should make a selection and the machine should print a voting as slip, the voter should review the paper and then place it in the box, if there are any disputes you count the physical records and that is considered the true record of the vote. The award for corrupting the system is too great to ever trust it and most of the decision makers have no way to make any informed judgement about the risks.