Decades ago one of my profs described his voting experience in the USSR: they had a completely private (“Australian”) voting system where you picked up a ballot, entered a private voting booth, filled out the ballot, then deposited it in the urn.

Or you could pick up a ballot pre-filled-in with the straight communist ticket to save time and just put it straight in the urn. Naturally anyone in the room could see which you chose.

Perhaps more amusingly: he was an exchange student at the time (late 60s?). Because communism was a universal movement anyone could vote, so he thought, “well why not while I have the chance?”