Of course, if enjoying the robust security features of Touch ID were such a simple task, then Apple would have saved itself a great deal of time and effort by just writing it into the software as a feature. What I mean is, while Bio does look and appear to function as a fingerprint sensor, it’s not the real thing, but simply gives the illusion that the lock screen has an in-built Touch ID-incarnate.
If you don’t happen to use a Passcode in the first place then you’re probably not too concerned about privacy or security, but if you do happen to want to keep your device locked away from prying eyes, you’ll be pleased to know that Bio can still be added even if you’re using the Passcode facility.
Bio jailbreak tweak is available for $1.99 from BigBoss repo and you should give it a try.
Have you tried Bio tweak on your jailbroken iPhone ?