We Brazilians have used eletronic voting machines many times. They are very easy to use, you have only to type your candidate’s number and click the confirm buttom after checking the candidate’s photo that will appear on the machine screen.
The electronic voting machine doesn’t allow some kind of people to vote for exotic candidates whose candidatures don’t exist as Tião monkey, Cacareco, the hippopotamus and that kind.
Although electronic voting machines are very modern and fraud-proof, they can’t prevent the naïve electors from voting for weird candidates. There should be sounds of laughters when someone would type the number of that sort of people. It would be fit to their taste.

picture from:http://newserrado.com/wp-content/uploads/2009/09/urna.jpg