Google's upcoming Pixel phones have a feature that lets you swipe down on the fingerprint scanner to open your notification shade and Quick Settings panel. It's one of those features that make you wonder why it wasn't there in the first place, since it gives you another way to interact with your device, and your fingerprint scanner isn't being used while you're screen is on anyway.Hopefully, we'll see that feature ported to other phones at some point in the future, but in the meantime, developer ztc1997 has found another awesome way to put the fingerprint scanner to use after you've unlocked your device.His latest app actually lets you turn your screen off by touching the fingerprint scanner, so it acts like a second power button to put your phone to sleep. It's a perfect solution if your regular power button is on the fritz, and even better, you can get this functionality without being rooted (though root helps a little). All you need to do beforehand is enable "Unknown sources"—then you'll be ready to get started.

Here Are Steps to Turn Off Your Android’s Screen with Your Fingerprint Scanner:

Step 1. First of all download and install up to the app named “Fingerprint to Sleep” on your android device. You can get this app just from the given link below as the app is not available in the Google Play store. So click on the link below to get up the app:

Download Fingerprint to Sleep app

XDA thread is the place where you can find up the updates for this app as it has been made by these developers only.

Step 2. At the first launch of the app on your app, you shall be prompted to enable up to the service of locking screen using the Fingerprint scanner. Just enable it from the option “Activate” and it shall get activated as soon. Now from the main menu inside the app tick mark the option “Enable fingerprint to lock” option.

Step 3. Now you would be able to lock your screen through the fingerprint scanner but the thing is that you could get up your device locked accidently with every single touch you got by mistake on the scanner. To prevent up the issue developers have added some different settings and options inside the app like “Response enrolled fingerprints only” which does up the same corresponding action.

Step 4. To prevent up the app from being closed in the background by the Android, enable up to the option Foreground service. This would make sure that the app and it’s functionality to lock screen through fingerprint scanner won’t get closed or stopped.

Step 5. There is also a root additional functions for the rooted users and there are some more advanced settings for the app that gets unlocked with the root access. Just try up the features in normal mode either but still if you wish to get up more flexibility and control over the app then you could decide to give it root permissions.