So a local ballot box.
Host a platform like this at city hall, county building, capitol building, schools.
Only a human can access a terminal. Have humans monitor ingress/egress.
A more generalized solution that solves the specific problem inherent to all these digital ones.
If it requires me to leave the house, that increase in friction will mean I will vote maybe on 1/100th what I would otherwise vote on. I suspect pretty much everyone is the same