HB 522 addresses voting accessibility for individuals with disabilities who qualify for mail-in voting and need assistance under specific provisions of the Texas Election Code. The bill directs the Secretary of State to develop an online assistive tool that enables eligible voters to apply for a mail ballot or mark their ballots online using assistive technology, ensuring they can cast a secret ballot without requiring personal assistance. The tool must allow voters to print their applications and ballots, which can then be submitted through the existing mail-in voting process. Additionally, voters may request that balloting materials be transmitted via email for printing and submission. The bill includes amendments to ensure that election procedures accommodate the use of these digital tools while maintaining election integrity, including provisions for the management and reconciliation of ballots submitted through different channels.