He talks about how three closed-source companies provide the software, and that no one can inspect the source, like poll-watchers used to be able to inspect the levers and gears of the mechanical voting machines. Indeed, the Diebold software was so bad that it is trivially hacked, and instructions are floating around the Net. The story points out that Diebold horked elections in California and Maryland (hey Ziggy and Lisa!).
One solution he brings up is voting receipts so people have a record. I think that is a good idea, but not the solution
He did not bring up open-source software at all. He makes the case for inspecting the source of the voting software, and how companies are afraid to do that (security through obscurity). He keeps leading up to the case that poll-watchers should be able to inspect the source, but then stops short of saying that it should be open source.
So, who knows about open-source voting systems and would like to put together a friendly letter with me to Jack Hitt?