Finding the stock iOS passcode interface to be a bit boring? If so, then keep your eyes peeled for Epicentre, an upcoming jailbreak tweak that adds a gorgeous new interface to the Passcode Lock screen.

Please note the tweak is for iOS 11 jailbreak.

Epicenter replaces the stock passcode interface with a beautifully animated setup that looks like it was inspired by a traditional rotary phone. It features a preference panel with several options for customizing the look and security of the passcode entry interface.

You'll also find an option in the settings for scrambling the number positions and for using the same button locations even if the numbers are scrambled. These are good options to consider to prevent people from peering over your shoulder and stealing your passcode.

It's on Julio's repo: http://julioverne.github.io/  if you are interested in it.