The stock iOS lock screen can probably be described as functional rather than anything exceptional, but considering it is such a small section of the operating system as a whole. it manages to get the job done quite effectively. The Binary Clock tweak that has just landed in Cydia is one of multiple packages that aim to bring a little bit of life and extravagance to the lock screen, and although a number of developers have pushed out binary based packages in the past this release is one of the best and more polished creations that we have seen.