We are all busy trading and hoarding as many coins as we can in the hope to be self sufficient later on down the road, but we should remember to have a plan to share the details, or all could be in vein.
Should there not be a mechanism allowing the inheritance of coins which have not be transferred during life to ones loved one? If someone is to pass and not provide the access to their wallets these coins are forever lost.
Food for thought.
your problem is quite simple yet substantial, you could just simply give your password and security numbers to your trusted beneficiary, in case your beneficiary are not capable of doing bitcoin transaction due to his or her age, means he is still a minor, you can hire a lawyer to instruct him to make the legal transfer of your documents, basically it is the same as transferring wealth to your loved ones when they reach full capacity to receive such inheritance. dont make your bitcoin life so complicated though.