And if it does, a voter can be bought and/or pressured to vote for someone else — the buyer (or the thug) will demand to see the voting confirmation before giving the money (or letting the kids go)...
Not if the paper trail can't be taken from the polling place. It's the same as with a paper ballot--you verify that it reflects your choices, and then trust that all the votes will be securely and correctly transferred to the central voting authority.
If you can't take the paper with you, (as you can't currently) then your point is moot.
Truth has always been found to promote the best interests of mankind... - Percy Bysshe Shelley