In my Nexus 4, I have the following screen lock options.
None Slide Face Unlock Pattern PIN Password
How can I get options other than these for my lock screen? I prefer non-rooted ways to get this done.
(The option I prefer is what I have in my Jailbroken iPod Touch - AndroidLock XT that allows me to use an unlock pattern with the nine points to create the pattern, invisible. But I don't mind any other interesting options available for a screen lock on android)