Simply staple a piece of paper to the original will, and the job is done.
What remains, of course, is to securely store that piece of paper.
Oops! Back to square one.
Not an issue. I'm planning a what-if guide for my daughters, with a whole range of things like people to contact and things to be done, et cetera, which I will provide them in a password protected PDF. This information could simply be there.
As long as you trust them with the p/w prior to your passing.
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire