 Sanford Morganstein also filed for a ballot-marking device patent in 2003, primarily motivated by the desire for a voter-verified paper audit trail.Morganstein founded Populex Corporation to commercialize this system, and by 2004, the system was brought to market, certified to meet the 2002 Voting System Standards.Like Julien Anno's ballot marking device proposal, the Populex system prints a compact summary ballot containing a bar code that is scanned as the voter drops the ballot in the ballot box.