Speaking as an App Developer, we cannot touch stuff like that. We&#x27;re allowed to ask Touch ID to verify things and process the results, but we don&#x27;t actually get to use the Touch ID system. It&#x27;s similar to how the shared keychain is used: We can ask iOS to do things, but then must handle any one of many possible answers. We don&#x27;t actually see your fingerprint in any way.<p>Now Cydia and 3rd party stuff? I have no clue.