What 20-year-old technology are some federal agencies still using?

The Federal Register, the federal government’s daily journal that collects new information from various agencies to be shared with the public, still receives some of its updates in the form of 3.5-inch floppy disks. The Federal Register refused to say which agencies are still using such technology. Agencies are also allowed to submit information on CD-ROMs, but not flash drives or SD cards.