Before talking about how ridiculously unsecured the fingerprints were, here are a few things to keep in mind about smartphones. A smartphone is just a tiny computer with no keyboard or mouse. Like any computer, smartphones organize their data into folders. As the user, you have access to some folders (like the folder that holds and displays your applications, or the one that holds pictures) while you don’t have access to others. This is meant to prevent accidentally deleting important files. For security, some folders are further only accessible by the phones operating system; regular users and applications can’t get inside. Those kinds of folders are usually where phone makers store fingerprint data.