That means that you can use your fingerprint to unlock your device, as you would normally do if the screen was turned of by pressing the hardware power key.

Turn Off Screen allows you to switch off your devices from:
1. Launcher shortcut
2. Launcher widget 1x1 - 4x4, resizable in Android 4.0+ (Also available in lock screen for Android 4.2+) (Donate version)
3. Notification
4. Floating button over all apps! (Double tap to use it) (Donate version)
5. Search button (if your device has it)

Other features:
1. Screen off animation
2. Screen lock/unlock sound effect
3. Screen off vibration

Notes:
For those who cannot see the screen off animation even the app is reinstalled, please follow the procedures below:
Android 4.x: Go to "Setting > Developer options > Transition animation", and then select 1x for this option.
Android 2.x, Make sure you selected the option "All animations" under "Settings > Display > Animation".
This app uses the Device Administrator permission.