A ballot secrecy sleeve is presented which is used to cover a ballot once it has been marked by the voter. The secrecy sleeve has a top and a bottom and a narrow shoulder at one end as well as a slot for pushing the ballot once it has been inserted into the ballot scanning machine. The ballot secrecy...http://www.google.com.tw/patents/US6817516?utm_source=gb-gplus-share專利 US6817516 - Ballot secrecy sleeve
