Snap Interactions

Updated: Nov 3, 2025

Experimental

This feature is considered experimental. Use caution when implementing it in your projects as it could have performance implications resulting in artifacts or other issues that may affect your project.

Design Guidelines: Providing a comfortable hand tracking experience is essential for creating immersive and enjoyable apps. Refer to the Design Guidelines at the bottom of the page to learn about best practices and to minimize risks of user discomfort.

Snap interactions allow items to automatically snap to poses in the environment. The DistanceGrabExample scene uses them to simply have the items snap back to their original position when not in use, but it is possible to create custom behaviors so the objects can snap to things like inventories, cells in a board game, or slots around the user body. To try snap interactions in a pre-built scene, see the SnapExamples scene.

SnapInteractor

The SnapInteractor is the Interactor class for this interaction. This component is placed in the item that you want to be able to snap, like a chess piece, and will take care of detecting nearby SnapInteractables and move the item towards the best available pose provided by them.

When the optional Time Out Interactable and Time Out are provided, the interactor will automatically move to said interactable after Time Out seconds if the grabbable is not selected or hovered by any other interactor.

SnapInteractable

The SnapInteractable component is the Interactable class for this interaction. When used as-is it provides a single pose in space to which the interactors can snap too, but optionally it can be enhanced in several ways:

Movement Provider, by referencing a MovementProvider the method for snapping can be fully customized. By default the interactor will follow the slot at a fixed speed, but following the different MovementProvider it could trace a curve, add easing, etc.

Snap Pose Delegate, the ISnapPoseDelegate interface allows creating multiple poses within a SnapInteractable. Implementing and providing this interface is useful for using a single SnapInteractable for all the cells within a board in a board game, or to define all the different slots in an inventory system, allowing to even move snapped items when hovering new interactors to make room.

Learn more

To learn how to add snap interactions to your scene, see Create Snap Interactions.

Design guidelines

Hands

Hands design: Learn about design for using hands in your app.

Hands technology: Learn about the technology behind hands.

Hands interaction types: Learn about the different types of hands interactions.

Hands best practices: Learn about the best practices, limitations and mitigations for using hands in your app.

Hand representation: Learn about hand representation.

Core interactions

Input primitives: Learn about the different input primitives.

Input hierarchy: Learn about the different input hierarchies.

Multimodality: Learn about multimodality.

Did you find this page helpful?