How do I know which of the controllers is not being tracked?
If one of your controllers is not being tracked and you want to find out which one, follow these steps.
- On your computer, open the SteamVR app.
- Hover your cursor on the icon of the controller that's not tracked.
- Click Identify controller.
The status light on the controller rapidly flashes white.
For more information, you may refer to the 
SteamVR Troubleshooting page.
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