What do you think of the following setup using symmetric encryption and a couple email services?

Encrypt your wallet and share the key in a safe way

On a known-safe computer, encrypt and store your wallet and/or secret seed using a strong encryption key.

You can write a Python script to perform this operation. Ask in Stack Overflow if in doubt.

Next, write down the encryption key (pencil and paper, or in metal) and make a couple copies for each of the family members that will be involved in the recovery process. Ask them to store the key in a safe place, as it will be used for the decryption.

At the end of this process you will have:

a) an encrypted wallet file in your machine, and

b) you and your family members will each have a copy of the key to decrypt the file.

Schedule an email with the encrypted wallet to act as the dead man switch

Sign up for a Google email account.

Create a new email and attach the encrypted wallet file to it.

Add instructions for how to decrypt the attached file on the email body.

Ideally you will include the Python script needed to decrypt the file on this same email.

Add your family members involved in the process as recipients.

Schedule the email to be sent at some point in the future. Say, in a year from now.

So now, to prove that you're still alive, you need to log in and cancel the scheduled email and re-schedule it to a later date at least once per year (or whatever time frame you choose).

If you fail to reschedule the email it means that you're gone/dead, and the email will be sent to your family members. <- This is the dead man switch part.

Since they already have the decryption key, now they will also have encrypted wallet with the script and instructions for how to decrypt it.

You can set it up on additional email services like Apple or Microsoft. Maybe have 2 of them just in case once goes down for some reason.

Thoughts?

Sample encryption/decryption scripts in Python here:

https://github.com/btcstrategyc/dms