I'M CALLING YOU PARANOID!!

No, really..

A recent photo and your name would work almost as good... Mostly it would be for when you retrieve the package from someone who may not have ever seen you before (the guy you gave it to at the USFS may not be the guy you see to get it back from) so that they don't give it to anybody that is NOT you. (yah, with the things my estranged wife has pulled, I'm a bit paranoid too)

It may be of limited use knowing what you look like and your name in a SAR situation, I think mostly it would be a psychological benefit on my part (they know what I look like and who I am), though it might help personify you to the rescuers somewhat as well, which may be of some use too.