If you’re worried that someone might be trying to obtainunauthorized accessto your iOS device when you aren’t looking, then you might find a new freejailbreak tweakcalledCatchaThiefby iOS developerJake Jamesuseful.
Once installed, CatchaThief harnesses your handset’s front-facingcamerato snap a picture whenever someone enters yourpasscodeincorrectly, allowing you to see anyone that might be trying to use your device without your permission.

When the tweak snaps a photo after a failed passcode attempt, it writes the image file to/var/mobile/catchathief. you may access this path through most reputable filesystem browsers, likeiFileor Filza, just to name a few:
Albeit a bit more convoluted than opening thePhotosapp to view the pictures, this semi-discreet means of storing the image files makes it more difficult for wrongdoers to delete their self-portraits if they so happen to guess your passcode after a few failed attempts.

Worthy of note, CatchaThief doesn’t detect incorrectTouch IDorFace IDattempts, but anyone who wants to access your device would obviously skip these unlocking methods since they’re biometrically tuned to your body instead of theirs. Given just how often Touch ID or Face ID tends to flop, this is probably a good thing. Otherwise, you’d end up with several pictures of yourself added to the mix.
Depending on your unqiue circumstances, CatchaThief could make a fine addition to your device. Not only can it teach you of potentially untrustworthy folks in your home or workplace, but it can also identifyiPhonethieves in the event that your handset is stolen and later recovered.
If you’re interested in giving CatchaThief a try, then you can download it for free from Cydia’s BigBoss repository. The tweak appears to work on bothjailbrokeniOS 10 and 11 devices and doesn’t come with any options to configure.
Will you be installing CatchaThief? Tell us in the comments section below.