Binary Clock is a new jailbreak tweak that outright replaces the stock Lock screen clock on an iOS device. The tweak features over a dozen different themes of various colors or shapes, along with the ability to hide or show the Lock screen date string.
Obviously, you'll need to know how to tell time in binary, unless your plan is to simply stare aimlessly at the pretty flashing lights. Don't worry, inside I'll not only showcase this awesome tweak, but I'll also teach you how to tell time in binary in less than a couple of minutes.