You cant unless there is a USB drive with the living person saying into the camera "I am X voting for X". There is no physical other way to confirm the vote is legitimate.

It's 100% criminal in thought no matter who uses it. Because even if it was based off the thought of "those that can't walk or get there" have then no choice but to send a letter prior to the government where they can then take your vote from home from a government worker to whom you still have to show I. D. If you don't like that then get your ass up and walk, crawl, hop, jump, run, drive, or take a bus and do it yourself.