> As to the website, the slow adoption of electronic filing has been driven more by the fact that it creates a duplicate set of procedures. You still need a paper system, so that e.g. prisoners can file cert petitions on paper.

True, but the Supreme Court's byzantine rules around paper sizes, font sizes, binding, and colored covers makes filing a Supreme Court case daunting. Perhaps that's by design. They could, like any other court that allows e-filing, allow standard printed copies of the filing, instead of requiring 6⅛" by 9¼" paper and binding.