Download Knock lock screen - Applock (MOD, Unlocked) free on android

Knock lock screen - Applock - special protection of the Android gadget for users who are concerned about the security of their portable device and the information data stored on it. This mobile application offers users to install an advanced security system on their devices, where they will be required to double-click on the display squares shown in the settings before getting to the screen for entering a personal identification number and other data. A few quick taps won't make anyone suspicious, so this feature will simply go unnoticed.