Well you give the recovery of that account to that person....

I don't know about you but... I ain't giving anybody my recovery keys. Even steemit inc. As you see you can't thrust company's either... I just changed the recovery keys to No one so it can't get hacked or taken away.. never ever use your owner key only just to change your keys. Don't store them on any cloud or internet connected device. Double store them make a backup. If your house burned down. (You could etch it in metal or stone)

Money, women and secrets you can't trust that with anyone.