The key in the form of a master key (ie enter it into the direct login, always pass all the security 2 layers, 3 layers), then print the paper, put in the place you think is safe (safe iron for example)
The soft file format, I write a script to encrypt the file, then zip it again, set the password, and email it to relatives (wife, brother, sister). Another email will send password contents. Another email sends the decrypt script.
If the recipient does not know about the crypto, tell them if they have a system that brings two emails that give a trusted person who knows about the crypto to ask them to take the coin.
The keys are never kept in a pure form, whenever they are used, they are unpacked and the script is decrypted. Using the shift-del always to send me to eternity.
The files are not outside the desktop, but to "somewhere" in the machine, and rename the file to normal files.
Email the zip file to 1 / a few secondary email, later want access is accessible both in primary and secondary email.
Hide the file into the picture, then save it in the machine one person.
Write instructions on the sequencing of the paper, given to relatives.
Finished, peace of mind is out of the way there is a guy who drove the car to his wife will still get his coin.
Good method to keep it secret. I use macbook and here is the code to zip a file/folder with a password;
zip -e filename.zip filename/*I hope this will help someone who is new at Apple :)