Why are the headset and controllers not tracked properly?

There are a number of factors that affect how well the headset and controllers are tracked. If the headset and controllers are not being tracked or you feel that they are not being tracked accurately, these are some of the reasons and recommendations on how to fix them:

Room is not bright enough

Adjust the lighting in your room or move your play area to an area where it's brighter.

Strong light source

Avoid direct glare like spotlights or sunlight on the headset cameras.
Close the curtains on windows where sunlight shines through, then adjust the lighting in your room.

Lack of tracking features in your room

When setting up VIVE Cosmos for the first time or if you moved your play area, look around your space while wearing the headset to gather information for better tracking accuracy.
Avoid room with plain walls. If the room has plain walls, attach some sticky notes or hang posters/pictures on the walls to add tracking features.
If you're creating mixed-reality videos, put up a green screen to cover the walls of your room and attach sticky notes on them to add tracking features.

Headset camera are blocked

Make sure you've removed the transparent films from all the headset cameras. See About the VIVE Cosmos headset to check the locations of the headset cameras.
Don't cover the headset cameras with stickers. If you have a protective case for the headset, make sure the case doesn't block the cameras.
Avoid using your hands to support the headset during play, as your hands might accidentally block the cameras. Make sure the headset is snug on your face so it doesn't move during play. See Putting on the VIVE Cosmos headset.

Other helpful tips

Make sure to select the power supply frequency used by your country or region. The power supply frequency affects the headset cameras and tracking accuracy. See Setting the power supply frequency.
If the above recommendations do not improve tracking accuracy, try clearing the environmental information or resetting the system. See Troubleshooting VIVE Cosmos.

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