Lock It Up

LockItUp is one of the smallest, most useful apps out there. Once installed the application will wait for your backlight to be turned off. Once the backlight is turned off it will check to see if your phone has been locked. If the device hasn’t been locked it will go ahead and lock it for you automatically. This application requires no user interaction at all, just download it and you’re good to go.

Preview (click to enlarge)