Wave to unlock Screen On or Off topic

Hi all, I am developer and I already published the app Wave to Unlock Screen On or Off
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.
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.
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I already added more functions there.
If you have any idea, please help me now. I will try to improve it :)
Really THANKS!!!!!
You can download it from here : play.google.com/store/apps/details?id=thorking.studio.wavetounlock

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