Yeah, I just heard that. I can't believe that they won't be told until "legalities" are completed. An ID card or DL would tell them what they need. Of course, maybe the families have been told and are in seclusion, and to keep the press hounds away they are putting out the story that notification must await recovery and official identification.
As strange as it may sound, official identification in most places requires a fingerprint match or physical ID by a family member.