Which document backup mattered most during an evacuation? / 撤离时，哪种文件备份最重要？

Without sharing private details, discuss which paper or encrypted digital copy helped you access shelter, health care, education, banking, or family reunification. 在不暴露隐私的前提下，讨论哪些纸质或加密电子副本帮助你获得安置、医疗、教育、金融或家庭团聚服务。