Office of the United States Courts, in coordination with the Administrator of General Services, shall make all materials in the system established under section 2 publicly accessible, free of charge. (b) Authority for short term delays of public access to certain records The Judicial Conference, after appropriate public notice and opportunity for comment, may designate categories of records which are not automatically made publicly accessible under subsection (a). Any such category shall be no broader than necessary, based on a determination of a specific and substantial interest in restricting the public right of access to court records, and subject to no more than a 5-day delay before being made publicly accessible under subsection (a). Any such designation shall expire after 3 years unless renewed pursuant to the requirements of this subsection. (c) Use of technology In providing public access under subsection (a), the Director shall, in coordination with the Administrator of General Services, use modern technology in order— (1) to improve security, data accessibility, ease of public access, affordability, and performance