Recommendation 11 (Electronic Voting) United States of America 2010
http://aceproject.org/ero-en/regions/americas/US/united-states-of-america-final-report-general/at_download/file
The trend towards the use of new voting technologies which use either VVPATs or hand- or computer-marked paper ballots is positive. Authorities could consider adopting federal legislation for the mandatory use of a paper trail in elections, including federal standards on mandatory hand-recounts of paper ballots and VVPATs.