But we've developed processes that allow us to have a functional online banking system. Similar processes might be possible for voting - such as a confirmation and triage period like with ACH transactions, but a month long or something.

For vote buying, seems like all the software has to do is enable faking your vote to 3rd parties effectively. Hard, but seems doable.

Like, yes, it's a very hard problem. But we could stand to do more than scoff and write it off as impossible.