Darwin wonders what the FBI used to crack open the iPhone of a terrorist. Leo says that the FBI won't say. Leo suspects they went to an Israeli firm called Celebrite, which can unlock older iPhones with four digit codes. Which is why Apple changed the code to a six digit code and patched vulnerabilities that would allow them to bypass it. If Darwin can prove that he owns his personal iPhone, Apple can open it for him. But if it's his sister's, there's no guarantee that Apple will. But if he can prove ownership or relational link, it's possible.