Continuing with the Sheetz MTO analogy, but turning serious for a moment: if Sheetz MTO machines can print a receipt for order pick up, why can't the voting machines print a receipt showing your vote in a two part copy? This would allow the voter to "verify" that his vote was recorded accurately, but also allow him to drop one copy into a box that could serve as a back-up and integrity hedge in case of machine/software malfunction or tampering/manipulation. :-?