Turnout can also be improved by voting on Sundays instead of work days. Yet they skipped that step and went right for electronic voting, that's nearly unanimously opposed by experts.
And if you could pre-print your completed ballot to be scanned (once your identity if verified per local requirements) then the process could be very, very fast and efficient.
Your printer will betray you by printing invisible identifying dots on your ballot: https://en.wikipedia.org/wiki/Machine_Identification_Code