I saw this commented for those that are eligible to use this but aren't sure how.

Doesn't seem to work on iPad 2 9.2 (yet), the app runs but once I pressed the button the device just reboots. For those people with compatible devices here's how to use it (from my understanding):

Download and install xcode (mac only, use a vm if you're on windows)

Download the Trident zip

Open the xcodeproj file

Once the project is open click Trident in the bar on the left Change the bundleidentifier to something unique, I recommend com.(yournamehere).Trident

Under team select your developer account or if you haven't used xcode to sideload before click "Add an Account..." and login with your apple id

From the bar on the left go to Trident > Trident > exploit.h and make sure only the device you have is uncommented (// in front is commented) so if you have iPhone 4,1 on ios 9_3_1 only uncomment TARGET_IPHONE_4_1_IOS_9_3_1 Press run from the top left

Once xcode installed the app go to settings > general > profiles > your profile and tap the trust button

Now open the Trident app and press the "Yolo" button

If successfull it should show something like "w00t root"

Now you should be able to ssh into your device using the terminal command ssh root@<ideviceIP> with the password "alpine" and install cydia from there (there are many tutorials on this). (Haven't tested if ssh works since my device is not compatible (yet?), feel free to correct me if I'm wrong)