Wave to Unlock - Lock Screen

You can use this application instead POWER BUTTON. Wave to unlock is allows you to lock and unlock you device just by waving your hand over the proximity sensor.
Wave to unlock screen is an app use Proximity sensor to capture the user waving in front of the screen. This app uses the Device Administrator permission.
By the way: you can turn off your screen with this application by using proximity sensor.
Feature:
✔ You can wave your hand to lock device
✔ You can wave your hand to unlock device
✔ Click start to enable this application.
✔ When your phone / tablet is locked, waving your hand over the sensor to wake screen up
✔ Wave to unlock: Unlock the screen by waving hand over the device screen.
✔You can increase or decease the sensitivity of your sensor.
✔ App uses Proximity Sensor to capture the user's waving in front of the screen to unlock the screen.
✔ If your mobile phone / tablet has Proximity Sensor, you can use this App to Unlock the Screen.
******* Version 1.0.2
+ Fixed bug auto wake up
Version 1.1
+ Add new feature battery saver
******* VERSION 2.0 :
Improve code -- now application will work with all devices.
******* VERSION CODE 14 :
Update the function to help save battery
******* VERSION CODE 15 :
Fixed bug null pointer exception
******* VERSION : 2.2
Add new feature to turn on and turn off by notification
Add new feature DOUBLE WAVE To Unlock/Lock Screen
Add new language (Vietnamese)
******* VERSION 2.3:
Allows user to disable the feature when the screen is rotated.
Add feature to avoid Delay device locking