I have been thinking about this. I started putting together a Google doc that I am sharing with some family members with details of various financial stuff such as pensions, bank accounts and insurance that will have value should I die. Of course there is also crypto. My Steem was worth serious money at one point and I still have a few grand in Hive. The two issues are communicating what it is and how to give access.

I have used the Lastpass password manager for years. They have a paid family plan that allows you to give access to others under controlled conditions. I am in the process of checking this out. It looks like you can designate people who can request access and if you do not respod within a set time they get it. So there are risks of it being abused, but then I would be very careful who I gave this too.

Of course I need to give them instructions on how they could access my crypto accounts and extract the funds. That can be in the shared document.

I have thought about ways to split the keys between several people, but that adds extra complications. There might be ways to automate a process that sends details to given people if I do not stop it happening, but that's also complex. People don't even use encrypted email, so sending anything that way is risky.

I'm interested to hear about how others are handling this.