Do they produce something that a voter would read and see prior to actually casting the vote or is it just an internal log? If it’s the former then the voter c

Do they produce something that a voter would read and see prior to actually casting the vote or is it just an internal log? If it’s the former then the voter can actually verify that the machine cast their vote as intended. If it’s the latter, there is literally nothing stopping the machine from changing votes as they are cast. To clarify I’m not saying that is actually happening, just that there is nothing stopping your vote from being switched by the machine either through malice or a software bug if the machine doesn’t generate a physical slip of paper that you actually put in a ballot box.