Put it on paper, make multiple copies, put them in different locations ( family, friends, bank safety deposit box's ) Make sure you carry one in your BOB and forget about it. If your going to go digital as in a flash drive buy a few and give them to family or friends to hold. Myself I use paper and flash drives. Just my opinion.
Shadow out !!!

Prepare Or Not To Prepare That Is The Question. The Answer, You Better !!!