Perhaps I'm being a bit harsh Doug but there is no way you should be grouping suggestions of "voter incompetence" with an allegation of an approach to tamper with computer code!

As for voter incompetance. I do remember seeing an example of one of your forms - one that had caused a great fuss - a few years ago. It should have been plain to anyone that particular form would lead to mistakes and should never have been used. Even the most able of people are liable to make mistakes with badly designed forms and in an election, we should be doing our utmost to cater for all abilities.