To hear these nutjobs talk, you’d think that, until they showed up, nobody – and certainly not any experts on the topic – have ever thought about security for vote counting by machine.
In actual fact, there’s a couple of decades of thought already put into the matter. Things like auditable paper trails (you know, like in Georgia for example) and cross-checking with hand counts (like you describe in Arizona), secure procedures for designing, building, implementing, and updating the machinery. Hell, there’s even a whole organization, the United States Election Assistance Commission, set up to provide advice and information.
The scare tales about how vulnerable counting by machine is describe, at best, a few early and very poorly designed systems (Diebold Election Systems, come on down!) that are no longer in use.
In fact, their understanding of voting technology is just as obsolete as their understanding of science, gender, race, economics, and so on.
But at least they’re consistent, right?