Over the past decade, the number of Bitcoin investors and other types of crypto assets has grown tremendously. Based on data by Coinmetrics, there are currently around 12 million Bitcoin millionaires in the world. However, there are those who die every year, without heirs who can access Bitcoin. The amount reaches 4 million Bitcoin (around US $ 40 billion), according to Coincover.
Meanwhile, based on the results of a survey by the Cremation Institute, of 1,150 respondents, 89 percent of them are very worried about losing their crypt assets. However, only 23 percent have a specific plan to pass it on to the closest person, for example to their husband, wife or children.
I think this is a very good idea, and I hope that someday there will be a crypto exchange and a crypto wallet that provides inherited features, so users will be safe and comfortable.
What I don't understand is :
If those 89% are worried about loosing their assets when they die , why are they not talking it out with any personal lawyer or maybe their wallet company ?
The thing is , it is advisable now a days to actually go and search your options , most wallet companies are providing inheritance plans for free. You can even add nominee in your account.
I do use a mobile wallet and few months back I received an email from Zebpay.
I will show you guys the SC of that -

Therefore I do believe that if you talk it out with the wallet you are using , you can very easily ask them to add this feature if this isn't yet added.
For people with paper wallets and hardware wallets they should give precise information to some person they trust more than anything which can be followed up upon their death.
You can also hire any lawyer to give some random things to your family upon your demise and just hide the hardware wallet in one of them , hopefully they will know what to do with it .