When the voting lines require 3 hours to vote, single parents with small kids skip voting. Voting booths are expensive and during cutbacks, people have to travel far and have 3 hour lines. This happened in Arizona and other places in primaries this year. Friction equals far less voting. Vote at home electronically on your phone means far more voters.

Far more voters is worth complexity. Security should just something we must engineer and deliver. Maximizing people voting is the real goal, outside of engineering excuses and worries.