Design

Head

Updated: Mar 13, 2026

This page examines head-based input methods for immersive experiences. It highlights the benefits and challenges of this approach, details its functionality, and offers ergonomic tips, design principles, and best practices.

Usage

In immersive experiences, head tracking determines the user’s orientation and position, enabling presence and serving as the foundation for rendering the virtual world from the correct viewpoint.

Terminology

These are the different parts, characteristics and frequently used terms to be familiar with:

HMD	Head-mounted display. A device worn on the head that displays virtual content.
FOV	Field of view. The extent of the world visible through the HMD.
Orientation	The direction in which the head is facing, typically measured as pitch, yaw, and roll.
Position	The location of the head in 3D space.
Inside-out tracking	Inside-out tracking utilizes embedded sensors and cameras in the HMD to capture and process user movements and the environment, enabling positional tracking without external sensors.
Outside-in tracking	Outside-in tracking uses external sensors or cameras placed in the environment to capture and process user movements and the environment.
Stationary	Meta VR devices support the Stationary boundary setup, which allows users to play while sitting or standing in a small play space. On Meta VR Glasses, Stationary is the default boundary for VR experiences. For Meta Quest setup instructions, see Set up your boundary for Meta Quest⁠.
Roomscale	Meta VR devices support the Roomscale boundary setup, which allows users to play while moving around inside their play area. Roomscale enables users to draw boundaries in their physical space using hands or controllers. For Roomscale experiences, we recommend a play area of 6.5 x 6.5 feet (2 meters by 2 meters) or larger. On Meta VR Glasses, select the Boundary icon in Quick Controls or open the Boundary tab in Settings to switch to Roomscale. For Meta Quest setup instructions, see Set up your boundary for Meta Quest⁠.

Design

This section covers utilization of the head for interaction. This includes input mappings, design principles, ergonomic factors to consider, and the key “do’s and don’ts”.

Interactions

Discover various input capabilities and interaction methods utilizing the HMD as input modality:

Targeting	The center of the user's field of view (FOV) is utilized for targeting solely when other input methods are unavailable. For more details, refer to Head Ray.
Selection	The device's volume buttons are used for selection solely when other input methods are unavailable. For more details, refer to Head Ray.
Position	Utilize the HMD's spatial position to accurately place the user, interactables, and virtual environment in relation to each other.
Orientation	Utilize the HMD's orientation to determine the user's view direction, and consider out-of-view interactions for purposes like interactables and NPC reactions.
Head gaze	The Head Gaze, also known as Head Raycast, is an interaction method that uses only the Meta VR device as an input modality. It serves solely as a fallback interaction, activating when other input methods are unavailable. The cursor is positioned at the center of the user's field of view (FOV) for targeting, and the device's volume buttons are used for selection to interact with virtual content. Note: Using the head for targeting can be unintuitive and may cause discomfort over time.

For a comprehensive overview of all input modalities and their corresponding input mappings, see Input mappings.

Design principles

This section explores the fundamental concepts that shape user-friendly interactions for input modality.

Maintain accurate tracking	Ensure that the user's movements are accurately translated to the virtual world, especially when they are moving. Avoid disabling or modifying tracking as it can cause discomfort.
Head locked content	Head Locked refers to a UI element that remains fixed in the user's field of view (FOV) and stays stationary relative to their head movements. This ensures that important information or functionalities remain visible and easily accessible. These UI elements can either be spatially and react to the user's environment, such as colliding or bouncing off objects, or be positioned close to the user's eyes without being affected by environmental factors.
Introduce users to recenter	Provide guidance for users to position themselves in their preferred orientation, considering their room setup. Allow them to reset the origin at any time if needed, as detailed on this page⁠.
Designing for diverse guardian setups	Help users stay within their designated play area by displaying interactive objects where they can easily interact with them. Consider the varying guardian setup options available to users: Stationary, Roomscale, sitting, or standing. Design content and interactions accordingly, taking into account the user's chosen setup. Avoid requiring interactions outside the user's boundary configuration or defined play area unless locomotion or indirect interactions have been introduced.
Environment design	Ensure that the virtual environment remains realistic and immersive, even when users move their heads to unusual angles. Additionally, design the environment to prevent users from passing through solid objects, which can be disorienting, uncomfortable, and break immersion.

Comfort

Height positioning

Interactables should be positioned at a comfortable height to prevent users from constantly looking down, thereby reducing neck strain and enhancing the overall experience. Ensuring a natural line of sight aligns with ergonomic principles promotes longer, more enjoyable sessions without discomfort. For more information, please refer to the comfort page.