A judge said Tuesday that he expects to rule “very quickly” on a lawsuit seeking to force Maryland officials to implement an online ballot-marking tool for the blind, a case that could impact other states that don’t use the tool. Lawyers for the National Federation of the Blind are hoping to have the tool in place in time for November’s elections. Their lawsuit, filed in U.S. District Court in Baltimore, contends that the state is in violation of the Americans with Disabilities Act for not using the technology, which they say would safeguard blind voters’ privacy. During three days of testimony that wrapped up Tuesday, Maryland Assistant Attorney General Dan Friedman argued that officials should not be forced to use something that has not been certified by the Maryland State Board of Elections. And another advocacy group for the blind, the Maryland chapter of the American Council of the Blind, said they think the tool could be vulnerable to hackers.