I really don't see what problem these machines are solving, except for "as an operative, I would like additional vectors to manipulate the election". In Germany, we get (a) a paper ballot (b) a pen Works perfectly. And quickly.
- scaled reasonably down. Which allows polling places staffed by fewer people.
- allows a higher number of voting stations as only a low tech physical curtain is needed to ensure privacy.
- throughput is primarily limited by identity verification which takes a cross check of ID document and voting notification card that is mailed to any eligible person once they reach their 18th birthday.