Indiana counties will publicly test their voting machines this week to make sure they're tallying votes correctly. But some activists contend the test doesn't address a larger problem.

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A Stanford computer scientist created the Verified Voting Foundation in 2004 to lobby states to implement more safeguards against voting-machine tampering, starting with a paper trail to verify vote counts if necessary. The push-button machines used in 52 Indiana counties create that paper trail on a printout inside the machine which records every individual ballot cast, but Julia Vaughn with Common Cause of Indiana maintains that's not enough -- she argues there's nothing to compare those votes to.

34 counties, including Marion County, use optical-scan ballots which can be reviewed individually if there's a recount.

And Vaughn says Indiana should follow the example of 25 states who conduct random audits after the election to look for any glitches.

Secretary of State Connie Lawson notes both parties are represented at all phases of the process, from the pre-election test to polling places to the counting of ballots. And she says the machines can't be hacked, because they're not connected to the Internet. Vaughn argues that doesn't preclude an inside job.