You have to fly in a helicopter and use a jackhammer to punch your ballot. The helicopter gets you far away from prying eyes, and the jackhammer makes you really try for whoever you're voting for on that thing. It's foolproof!
While using the jackhammer on the ballot, the helicopter pilot keeps yelling “Heyo (ひょう), don't mess up! Heyo! Watch out, don't let me see!” as he flies the helicopter all over the place.
Currently there are no similar looking kanji which exist in the WaniKani learning system