Varjo Base is the software used to control your headset. You can observe what the headset viewer is seeing, quickly access settings and presentation tools, and analyze your project with real-time data.
The main window in Varjo Base is divided into different sections as shown in the image. 
Using the Tools menu
See the table below for the different tools in the Tools menu.
XR-4 Series, XR-3, VR-3, and Varjo Aero
| Real-world view | Turn on the mixed reality cameras to see the surrounding physical environment (XR-4 Series and XR-3). |
| Calibrate eye tracking | Start the eye tracking calibration. |
| Action tap / Action button | Invoke a tap gesture of the touch area (XR-4 Series) / Invoke a press of the Action button in the headset (XR-3). |
| Menu / Menu button | Invoke a tap gesture of the touch area (XR-4 Series) / Invoke a press of the Menu button in the headset (XR-3). |
| Headset view | Show or hide the window for Headset view. |
| Eye camera | Show or hide the Eye camera view. |
| SteamVR | Open the SteamVR status window. |
| Analytics window | Open the Analytics window. |
XR-1 Developer Edition, VR-2 Pro, VR-2, and VR-1
| Real-world view | Turn on the mixed reality cameras to see the surrounding physical environment (XR-1 Developer Edition). |
| Calibrate eye tracking | Start the eye tracking calibration. |
| Application button | Invoke a press of the Application button in the headset. |
| System button | Invoke a press of the System button in the headset. |
| Headset view | Show or hide the window for Headset view. |
| Eye camera | Show or hide the Eye camera view. |
| SteamVR | Open the SteamVR status window. |
| Analytics window | Open the Analytics window. |
Using the Headset view
The viewer’s experience is displayed prominently in the headset view. Below the headset view are tools to record your observations and guide the viewer when needed.
| Screenshot | Captures a screenshot of the Headset view. The image file is saved in the Pictures > Varjo folder on your Windows computer. The Varjo logo and device name is added by default to screenshots. It is optional to use them, and you can adjust your preferences in the Presentation tab in the Settings panel. (XR-4 Series, XR-3, VR-3, and Varjo Aero) |
| Record | Records video of the headset view. The video file is saved in the Videos > Varjo folder on your Windows computer. The Varjo logo and device name is added by default to videos. It is optional to use them, and you can adjust your preferences in the Presentation tab in the Settings panel. (XR-4 Series, XR-3, VR-3, and Varjo Aero) |
| Gaze dot | Visualizes the eye tracking feature to see where the viewer is looking. This feature is only accessible if eye tracking is calibrated. |
| Pointer | Turns your mouse cursor into a VR pointer that is visible inside the headset. |
| Mute and activate microphone | Turns your microphone on and off. (XR-4 Series) |
Using presentation options
The Presentation tab in the Settings panel contains features to ensure optimized immersive experiences. In addition, there are options related to presentations. For all the options, see the table below.
| Background scene | Select a background scene that is shown when no applications are running. |
| How to wear your headset | Show instructions inside the headset on how to wear the headset and how to check image quality. |
| Disable touch controls | Disables the touch controls, so that the viewer can focus on the immersive experience while the presenter controls headset features from Varjo Base (XR-4 Series). |
| Disable headset buttons | Disables the headset buttons, so that the viewer can focus on the immersive experience while the presenter controls headset features from Varjo Base. (XR-3, VR-3, Varjo Aero, VR-2 Pro, VR-2, XR-1 Developer Edition, and VR-1). |
| Disable mouse in headset | Disables the mouse in the headset, so that the mouse works on your computer only and cannot be used to control the Menu inside the headset. |
| Disable notifications in headset | Disables notifications in the headset to keep the immersive experience free of distractions. Note that error messages are still displayed in the headset. |
| Watermark in recordings | Adds the Varjo logo and device name to the top-left corner of screenshots and video recordings. The watermark is enabled by default. (XR-4 Series, XR-3, VR-3, and Varjo Aero). |
| Optimize performance | Improves performance by shutting down those Varjo processes that are not needed to run the current application. |