[woojoo666]

Sorry I meant centralized intermediaries, which is what is often meant when referring to blockchain tech. Some other examples of centralized intermediaries are banks, ticket resellers like ticketmaster, deed notaries, etc.

And as for sharing keys with family members, perhaps just list them as sub-members of the owning member on the blockchain. When the owner changes, all previous sub-members lose access too. This can probably be done using a smart contract

[kareemsabri]

You can certainly do it. But then the problem being solved is "keys are bad". Typically in startup lore you want a product to be 10x better than the existing solution to gain mainstream adoption. I have a hard time picturing smart locks to your doors on the blockchain as being 10x better than keys.