This is used to indicate which pose the Tracked Pose Driver is currently tracking
| LeftEye | The left eye of a HMD style device |
| RightEye | The right eye of a HMD style device |
| Center | The center eye of a HMD style device, this is usually the default for most HMDs |
| Head | The head eye of a HMD style device |
| LeftPose | The left hand controller pose |
| RightPose | The right hand contoller pose |
| ColorCamera | The color camera of a mobile device |