For those holding Bitcoin among other cryptocurrency, have you set up a solution for if you are incapacitated or possibly unable to act for other reasons to allow family or friends to access your Bitcoin?

It's not that I don't trust anyone with a 2/3 wallet, the problem is getting them to understand Bitcoin. Has anyone set up a digital contract with a dead man's switch to automatically sell and dump their cryptocurrency? Do you think there will be a market for a service like this soon?