Archiving of EMB materials is important to protect the institutional history and memory of the EMB, and to ensure that reference materials are available when required. Archiving policies need to include requirements for document security, for the structure and locations of current hard copy and electronic file records (including electronic file backup policies), for the preservation, on or off site, of historic records, and for the timing and manner of disposal of unneeded records. Clear archiving, disposal, and/or destruction plans for all EMB equipment and materials are necessary, and especially important to ensure that electoral materials that could be used in future legal proceedings or for research to improve electoral processes are appropriately preserved. Environmentally sound methods of disposing of unwanted assets – for example, the packaging for used registration kits in Cambodia in 1998 – are a good practice.