I carry a chip with my important information (encrypted of course)and have found it very useful. I would assume the same for the document folder mentioned above.

Having copies of your important documents makes it much easier to get certified copies from the issuing agency. Things like my drivers license number make my local Dept of Motor Vehicles happy when I need a duplicate license.

Likewise when filling out a medical form, I have a record of the dates of various injuries, shots, past doctors names etc.

Perhaps the copies are not legal in some circumstances, but it is much better than my memory.

Nomad.