How to change iphone unlock screen to a sliding password?

So I've seen some phones where the password to get into a phone is a shape that you draw on a series of spots. I would like that on my iphone, instead of having to pick up my finger for each number of the passcode, I'd like to just slide. I can't find an app for it.

Sorry man, the grid pass code is only available on android phones. You could jailbreak your device but that's risky.

The password you are talking about is only available for android devices but you can jailbreak you idevice and download it. You can jailbreak your device on any ios now. Even ios 6.