Fast Screen Locker is a plugin for X Launcher and iLauncher, which provides the easiest and convenient way to lock your screen. With this plugin, you can lock your screen simply by double-tapping on the blank space of the launcher, without having to press the power button. This feature is released as a separate plugin app designed for better permission handling and memory usage.

To use Fast Screen Locker, you need to install X Launcher or iLauncher app under this account, activate Device Administrator for Fast Screen Locker, and then open the launcher app and double-tap on the blank space to lock the screen. You can find the "Double Tap Lock" feature in the launcher settings under "Locker".

It is important to note that this plugin only uses one permission, the Device Administrator Permission, which is a very sensitive permission. The developer assures users that this permission is only used to lock the screen and nothing else. If you wish to uninstall Fast Screen Locker, simply disable Device Administrator for this plugin before uninstalling it.