This Device ID Manager will find out your device id (serial number) to share with developers.
This is a very useful tool for Gear VR developers and end users.
Device ID Manager displays your device id, which is required for signature file creation (OSIG).
Create a signature file or learn more about how to use it below:
https://developer.oculus.com/tools/debug/
The App copies your Device ID to your clipboard and activates the share function e.g. email etc.
Note: You DON'T need to root your device.