I hope by the time I have to worry about it someone will have figured out how to do it on a commercial way.

Whoever finds a way to make a business out of bitcoin inheritance will make a lot of money. Perhaps banks will adapt to offer such service in the future?

Also, can you imagine: "here is the qr code with the seed to the bitcoin wallet your father left you". You scan it and it's a link to the youtube video of Never Gonna Give You Up. :)