Typically, voters with these sorts of needs have had to travel to a polling place to use an accessible voting machine, but the pandemic may make that difficult this year.
Bridges doesn't think politicians have purposefully or maliciously failed to take the needs of voters with disabilities into consideration by expanding mail-in voting.
"It doesn't make it any less frustrating or angering to be completely honest," Bridges said. "It's just sort of like we weren't even considered; there wasn't even a debate that took place where we could serve and volley."
When asked about security concerns with the technology, he said that's not his job, that's the role of security firms and the government.
"We want access," Bridges said. "It's not really up to the American Council of the Blind to ensure that these systems are secure."
'Risk appetite'
Returning ballots electronically is still in a pilot phase, with the states taking it one election at a time. But Finney said he expects at least five states to offer his company's ballot return technology to voters with disabilities in November's general election.
It's a major development to expand the use of such systems beyond just military and overseas voters, since many of those voters already vote by what are considered insecure methods like email and fax. Disabled voters in many instances will be choosing to electronically transmit their ballot instead of using a completely paper system.
The Democracy Live ballot return system stores a voter's ballot and then allows an election official to access and print it.
Finney, however, doesn't prefer the term "online voting."
"It's a loaded term. ... Really what this is, is a secure portal. If anything, it's a document storage application," Finney said. "When people think of online voting, they're thinking it's all being tabulated online."
But a number of cybersecurity experts disputed that characterization when presented with it by NPR.
"Sorry, but what a load of bull****," said Joe Kiniry, a principal scientist at Galois, the company contracted by the federal government to develop a secure and open source voting machine.
The phrase "online voting" encompasses any voting system where "voter choices are transmitted over a wide area network," Kiniry said, and has nothing to do with how those ballots are counted.
"Online voting is not a loaded term," Kiniry said. "It has a very simple definition that has been widely agreed upon in the research community for about 40 years."
Cities, counties and states are largely free to use whatever voting technology they want because elections are run at the local level with very limited federal oversight.
In the case of online voting, there's also very little financial risk. Tusk Philanthropies, a nonprofit funded by multimillionaire Bradley Tusk, is funding many of the pilots with an aim at expanding Internet voting and increasing turnout in U.S. elections.
His organization has funded the West Virginia pilot program and other local pilots in Utah, Oregon, Coloradoand Washington.
Tusk told NPR earlier this year that he hopes to fund as many as 50 mobile voting pilots in the coming five years.
"Everyone who doesn't want this to happen is never going to say, 'We oppose mobile voting because we don't want higher turnout,' " Tusk said in January. "They're going to say, 'It's not safe.' And if we have proven 30, 40, 50 times over that it is safe, it's a lot harder for those objections and arguments to fly."
Election security experts say that rigorous independent auditing is needed in order to reassure the public the results are legitimate. That's lacking in the case of Democracy Live, says Sen. Ron Wyden, D-Ore., who has opposed online voting for many years.
Wyden does believe voters with disabilities should have access to software that allows them to mark their own ballot using their own accessible machine, but he thinks those ballots should then be mailed in, not returned electronically.
"It is simply irresponsible to allow online voting, when leading experts have warned specifically that this technology is dangerous and before a system has passed an audit by independent experts," Wyden said in a statement to NPR. "So far none of these products has passed that test. It is far too risky to gamble the constitutional rights of voters with disabilities on unproven tech."
West Virginia dropped its previous online voting vendor after a number of independent investigators cited security issues with its system.
Overall, the amount of voters using some form of Internet ballot return in 2020 is still expected to be minuscule; Finney expects less than 10,000 voters nationwide. And he says he doesn't think the systems should be used more widely until there have been more pilots.
But many election officials say they shouldn't be used at all. One state election director who requested anonymity in order to speak candidly called the technology "the third rail" of voting systems because they ignite such controversy.
Similarly, Washington Secretary of State Kim Wyman gives two reasons for why she has pushed back for 20 years against various efforts to expand Internet voting.
"The Internet is not secure, and we know this more today than I did 20 years ago," Wyman says.
The second problem has less to do with technology, but is tougher to solve she says: convincing voters in a close election that the results are legitimate when they don't understand the underlying technology.
Ahead of a highly polarized presidential election, Wyman says it's not the time to introduce new technology.
"We can't put our election at risk to technology we cannot guarantee is secure, and right now, in 2020, we cannot guarantee that any electronic transmission of a ballot is secure," Wyman said. "While it seems like electronic voting would really solve a lot of problems, it would create far more mistrust than I think we have the risk appetite for."