The VotingWorks VxMark ballot marking device (BMD) and VxScan ballot scanner run on commercial off-the-shelf (COTS) hardware. The systems were developed by the nonprofit organization VotingWorks. The Center for Democracy & Technology announced its support for VotingWorks in late 2018. The BMD and Scanner were tested in in a single precinct in Choctaw County, Mississippi in the state’s 2019 primary. The machines were tested again and then used countywide during the general election.