Still, Trump’s order has sparked questions from the public and uncertainty about the use of different kinds of voting machines. Touchscreen voting machines, barcodes and the Trump orderIn most Texas counties — including the most populous — voters make their selections on touchscreen machines known as ballot-marking devices. Different methods of voting in TexasAbout 80% of Texas’ 254 counties use machines to mark voters’ choices on paper ballots. Two small Texas counties — Limestone and Foard — don’t use paper ballots at all, but state law will require them to by next year. Breaux said the voting booths take up less space than the voting machines, so polling locations can accommodate more voters than before.