The use of voting machines has been ruled unconstitutional in Germany: http://www.bverfg.de/e/cs20090303_2bvc000307en.html http://www.bverfg.de/e/cs20090303_2bv

The use of voting machines has been ruled unconstitutional in Germany: http://www.bverfg.de/e/cs20090303_2bvc000307en.html http://www.bverfg.de/e/cs20090303_2bvc000307en.html (English version of the ruling!). Only paper ballots are used in Germany, and they are counted by hand. This article is about the software used to tabulate and transmit the hand-counted vote counts. On the supreme court decision: the key section is "When electronic voting machines are deployed, it must be possible for the citizen to check the essential steps in the election act and in the ascertainment of the results reliably and without special expert knowledge." - since it's just about impossible to build a voting machine in a way that anyone can convince themselves of its proper operation without special expert knowledge, voting machines are effectively unconstitutional. Everyone can follow the process of counting votes on a paper ballot.