; (7) ensures that closed caption activation and display settings and audio description activation and performance settings required under paragraphs (1) through (6) persist across all video playback functionality on the apparatus or device, including in applications or other software or plug-ins added by the user after the sale of the apparatus or device, and after powering off or restarting the apparatus or device, until a user changes the settings or the apparatus or device is reset to factory default settings by the user; and (8) provides the necessary hardware and software to achieve compatibility with assistive technologies and services, peripheral devices, or specialized customer premises equipment commonly used by individuals with disabilities to achieve access, including refreshable braille displays, switch activation such as sip and puff devices, hearing aids, hands-free technologies, and voice control technologies. . (b) Implementing regulations (1) Definition In this subsection, the term navigation device has the meaning given the term in section 76.1200 of title 47, Code of Federal Regulations, or any successor regulation. (2) Requirement Not later than 18 months after the date of enactment of this Act, the Federal Communications Commission shall prescribe such regulations as are necessary to implement the amendments made by subsection (a), which shall— (A) define categories of entities engaged in manufacturing, importing into the United States, maintaining, operating, or providing applications, plugins, or other software for apparatus and navigation devices; and (B) apportion the responsibilities for compliance with subsections (u), (z), and (aa) of section 303 of the Communications Act of 1934 ( 47 U.S.C. 303 ) among the entities defined by the Commission under paragraph (1)— (i) to ensure full access by viewers via all entities and combinations of entities responsible for digital apparatus and navigation devices