Some of their requirements are:
Stops Secrecy in Vote Tabulation: OVC has a team of scientists ready to program computer software for voting machines and electoral tabulation that would be publicly owned or open source. Open source software could be checked by any party or group by hiring a capable computer programmer.
Provides Paper Trail: The OVC recommended procedure for tabulating elections relies on a paper ballot that is then fed through a scanner into a locked ballot box so that all originals are saved in case of the need for a recount or audit.
Scientifically Verifiable: In addition to open source voting machine and tabulation software, the Open Voting Consortium is also working on a database checklist for standard practices in vote tabulation that would assure transparency and accountability. Some aspects of the OVC concept will soon be enfolded into California legislation.