USA: New D.C. voting machines pass their final publi test before primaries begin, The Washington Post (2010)
This article reports on the introduction of new voting machines in Washington D.C. The new machines went through their final test, and passed it. The machines guarantee the validity of the votes with a "triple redundancy": votes are saved three times, one of which on paper. The option to vote on paper remains.
The link address is: http://www.washingtonpost.com/wp-dyn/content/article/2010/08/25/AR2010082506614.html