Lock Screen Gestures were originally made popular by Cyanogen Mod. With lock screen gestures you can unlock your phone or launch an app from the lockscreen by drawing a shape on the lockscreen. This is a cool feature that has been available to custom rom users only. Now you can use gestures to unlock your device no matter what phone or firmware you are using. The Pi Locker app brings this feature to the masses! This app is still in Beta so it will not operate perfectly, but should be stable enough for daily use. This app is clean and simple. Head to the play store link below to grab this app for free.
Via Play Store