How would you find a way that would make sure to protect the privacy of someones vote?
Its almost a guarantee that liberal organizations would use underhanded tactics to verify its members and others voted the way they wanted them to vote.
I can't tell you how many teachers I know in NYC, who voted for Bush but would never ever admit it in public or to the people they work with.
The printout would be behind a view window of the kind difficult to photograph through. The window would have a shutter that would only open after the votes have been registered and stay open until voter verified them. The hard copy would then fall into a sealed hopper so that they would naturally randomize. You could even make the hopper similar to a clothes dryer that would turn 1/4 turn after the ballot is dropped in.