A federal judge in Baltimore ordered Maryland election officials to adopt an online absentee voting tool in time for this year’s general election, a move designed to make it easier for disabled voters to cast ballots. Opponents of the system — including computer security experts — have warned it could lead to voter fraud or privacy breaches. The tool, developed in house by the State Board of Elections, allows disabled people to receive their ballot over the internet and fill it out on a computer. The completed ballot must be printed and mailed to an elections board. Attorney Jessica Weber, who represents a group of voters as well as the National Federation of the Blind, said during the trial that her clients are currently “being denied meaningful access to voting.” In a 33-page ruling issued Thursday, Judge Richard D. Bennett agreed and ordered the state to adopt the system. ”This Court finds that Plaintiffs have been denied meaningful access to the State’s absentee ballot voting program as mandated by the Americans with Disabilities Act and the Rehabilitation Act,” he wrote. The ruling applies only to this year’s election.