Everything will gone with him/her after his/her death, if she/he doesn't arrange everything the ways he/she wanted.

Some possible ways to ensure that their families or love ones will get or inherit every cryptocurrencies she or he possesses.

First: Train someone from their member to have knowledge how cryptocurrency works, teach them to transact, like transfer, withdraw or purchase using cryptocurrencies.

Second: Leave a video or links, which they  can access after his/her death, of course, everything!

Third: Create cryptos wallet for  every families she/he have, transfer amount of according to his/her wish, and don't forget to give the access/seeds plus instruction.
 
No one knows when that time will come, what we all knew, death will come to us unexpectedly,