One of the most interesting proprietary features of the HTC One M8 (2014) is undoubtedly Motion Launch. For those who aren’t familiar with Motion Launch, it essentially allows you to wake your device from sleep and launch certain apps with a few easy gestures such as bringing the device into a particular orientation and flicking your thumb on the screen.
As interesting as Motion Launch is, the feature is unfortunately limited to the M8. Luckily, XDA Forum Member Acela1230 created Knockr to bring some of the same functionality to various other devices. Now before we wet started, it’s important to note that Knockr is only meant for OLED devices. This is because the application keeps the screen “on” even when it is off, in order to accept touch input. This isn’t really an issue with OLED devices, as a black pixel requires next to no power.
Knockr currently supports several gestures including double tapping the screen, swiping in a particular direction (up, down, left or right), long pressing the screen, and pressing the volume up key. These gestures can then be defined to launch applications of your choosing or unlocking the screen.
So if you’ve got an OLED device such as Samsung’s or Motorola’s recent offerings, head over to the application thread and give Knockr a try.
But I install it because I am very curios and I see it doesnot work.. 
