One of the coolest features about the HTC M8 is the ability to interact differently with your device even when it is turned off. You could either double tap to unlock the device, a bit like the LG G2 or the older Nokia devices like the Nokia N9 or simply feed in a gesture which would open the app of your choice. This would help you to quickly launch an application from the lockscreen without having to go all the way in your app drawer. This is especially useful for your most used applications as you can access them without breaking a sweat.
We saw Moto X, using Active Display for a more immersive Lockscreen experience and now HTC has done something similar. Sure, you must be feeling a bit left out. Not any more as long as your smartphone uses an AMOLED display. You can find out the type of display your device is using by simply going into the specs of the phone, it would be one of between OLED or LCD display.
Knockr is the app that allows you to quickly launch the application from the lockscreen without having to unlock your device. The application works only on AMOLED displays and that makes sense as LCD displays will take a lot of juice out from the device. You do not even have to turn the display on to use the app to launch the app of your choice directly.
Once installed, you have to give the application the required permissions to take over your lockscreen and Knockr works seamlessly in the background. Currently the app supports only certain gestures. According to the developer of the app, these gestures are as follows:
- Double Tap the screen to launch the app of your choice or simply to unlock the device. This will prompt for your password, if you have one set up on your device in case you set the gesture to unlock the phone.
- Swipe Left, Right, Top, Bottom is another gesture that you can setup to launch the app of your choice or to simply unlock the device.
- Long Press to unlock the phone or launch the application can also be used.
- If you turn your device in Landscape mode and press the Volume Up button, the app will launch the camera directly from the lockscreen, a worthy workaround if you do not have a physical shutter button on your device.
We were unable to test the application first hand since we use a phone with SLCD display but the general reviews have been largely positive. While the innovation behind the app and the concept is really cool, it apparently causes plenty of wakelocks on your device which can curse the battery backup on your device. So, we do urge you to keep that in mind while using the application.