Personally I think if voting software is doing much more than basic addition, someone messed up. If you write code that takes an input and increments a number,

Personally I think if voting software is doing much more than basic addition, someone messed up. If you write code that takes an input and increments a number, and you're worried that someone might exploit your code, someone else should have wrote the software. Attach a printer that shows the voter a paper receipt before the receipt goes in a box, and it should be able to prevent against most any electronic attack.