Recommendation 10 (Internet Voting) Estonia 2011
http://aceproject.org/ero-en/regions/europe/EE/estonia-elections-assessment-mission-report/at_download/file
The OSCE/ODIHR recommends that the NEC forms an inclusive working group to consider the use of a verifiable Internet voting scheme or an equally reliable mechanism for the voter to check whether or not his/her vote was changed by malicious software.