Android has seen different kinds of lockscreen from the first time it hit consumer devices, there is the face unlock, pattern, classic code unlock, etc. Now an XDA developer kevdliu has come out with an application which replicates Windows 8 picture password lockscreen, but also has added many amazing features to it.
Now, this is the next level of security for your mobile devices, until the iPhones finger print scanner is made into use. You can select a custom image as your lockscreen and customize that image by selecting a point and then drawing gestures or lines from that point. Now you have to always press that point and do the customized gesture every time to unlock your device.
This application is really easy to use. You just have to select a background image for your lockscreen and then put in the gestures and customization, the application also allows you to test out your gesture to make sure that you get it right.
The pro version also has options for screen lock delay, start in boot and toast message options.
You can download this application from Google Play store here for free.