How to Remotely Access Someone's Phone

I wondered if even if you haven't got access to the phone, if you could somehow access it remotely by Wi-Fi or Bluetooth and then have the pattern of the thumbprint, you could digitally do it. But that's not what you've seen done it. You have to actually have the phone in your hand. The fingerprint stuff is in essentially like a little isolated computer that exists on each phone that is never backed up. And that's why every time you get a new phone, you have to reset up your fingerprints because Apple doesn't back up any of that information.