Good grief! (Score 1)

How hard is this? In our Municipal elections (Toronto), we used bubble in ballots read by a machine. The machine was programmed to reject the ballot if no votes were detected. We could then ask the voter if they really meant to cast a "none of the above" ballot. If yes, the ballot would be re-entered, and you could press a button to tell the machine it was not spoiled, and it would tabulate it correctly. This system would certainly pick up if the pen was not the correct type!