I have been looking for some time for a way of sharing sensitive files with family members, but in a secure way not having to rely on their security.
I believe that sharing within personal vault could accomplish this.

If I were to share a file within my vault and that shared file would only be available within the other users vault, and they were unable to move the file out of their vault, then that file would be protected by 2FA whether they had set up 2FA on their accounts or not.

I'm looking at it to store end of life documents, where to find my finances, my accounts etc, but unfortunately my wife and kids are clueless about security.