The developer Elias Limneos (behind SBRotator, CallBar, FoldersInFolders ...) reveals a tweak using Touch ID, the fingerprint sensor of the iPhone 5s. To date, no tweak uses the sensor (no tweak simply works on the iPhone 5S, but that's another story). Limneos was therefore able to access the files necessary to do what he wants.
For his first project that he intends to use it for security purpose. He reveals via a video posted on YouTube in which we see the developer use the Touch ID to access applications. Without the fingerprint, the application does not open. This is an interesting idea that joins a few tweaks already available, that do the same thing, but requires a password. But, with this tweaks, you'll only use your fingerprint witch saves us more time.
No name for this tweak or a possible release date has not been announced. However it gives good news for additional uses of Touch ID. As a reminder, the sensor initially to unlock the device and make purchases on the App Store / iTunes.