Knock Screen Unlock

Knock the door to unlock the screen. This free app Knock Screen Unlock supports to knock to open the door and unlock the screen here. MAIN FEATURES:Totally free for Android mobiles and tabletsSimple to lock and easy to unlockEnable to lock the doorShow us date and timeEnable vibration effect or ringtone effectSupports full screen or status barGet quick access to shortcut unlock with SAERCH keyKnock the door to unlock INSTRUCTIONS:1. Do you want to have a full screen of red door here or just want to check daily notifications in status bar?Have you ever thought of quick unlocking in emergency?Do you want to get reminders of ringtone and vibration?2. This screen locker Knock Drag Screen Unlock supports to enable sound/vibration effect, supply us with full screen/status bar and show us a fast unlock SEARCH key here.3. Just set and activate this screen lock.4. Press POWER key to turn on the screen and we can get a red door.5. With daily information of date and time, we need to open the door to unlock the screen.6. Know three times in 3 seconds on the left door here to open successfully.7. In the same time, we can unlock the screen with ringtone or vibration here. Knock the door and unlock the screen. Come to try this screen locker here for free. If you like it, please give us 5 stars and share with your friends. Also you can email us your advice and problems here. You will love it! A door could be an opening/closing structure used to block off an entrance, typically consisting of an interior side that faces the inside of a space and an exterior side that faces the outside of that space.When open, doors could admit people, animals, ventilation, and light. The door can be used to control the physical atmosphere within a space by enclosing the air drafts, so that interiors may be more effectively heated or cooled. Doors might be significant in preventing the spread of fire. They may act as a barrier to noise. Many doors could be equipped with locking mechanisms to allow entrance to certain people and keep out others.