Cookie is an app in Cydia that allows you to backup your iPhone's unlock activation ticket, an important part of unlocking your iPhone. Before you had to use SSH or iFile to manually find it and back it up, but with this it's much simpler. Anyone using the new SAM method to unlock their iPhones have been directed to backup their activation tickets to make unlocking a possibility in the future, and now with Cookie, the task is as easy as opening an app and tapping a button.

Credits to iDownload Blog for the image.

Cookie is available for free from the BigBoss repo.