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Controller Grab Interactions
Updated: Nov 3, 2025
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.
Grab Interactions let you grab and release objects with an external selection mechanism, like a controller’s trigger or buttons. For the hands and controller driven hands version of grab, see Hand Grab Interactions.
Note: For a hands-specific grab interaction, Hand Grab Interaction or Touch Hand Grab Interaction usually work best.
GrabInteractor
A GrabInteractor defines a Rigidbody to use for testing overlap with GrabInteractables. In addition, a target transform is used for scoring multiple overlapping GrabInteractables by distance. A GrabInteractor delegates transform logic updates to a Grabbable.
Optionally, a grab source transform may be provided for overriding the poses used during selection on a Grabbable.
Optionally, an IVelocityCalculator can be provided to forward velocity information from a GrabInteractor to a GrabInteractable upon grab release (in instances of throwing).
It is also possible to enforce a grab or release (selection/unselection) of a GrabInteractable by calling the method ForceSelect/ForceRelease.
GrabInteractable
A GrabInteractable defines a Rigidbody to use for testing overlap with GrabInteractors.
Reference
For reference information about the components used by grabbables, see the following links.
Learn more
- To add grab interactions, see Add an Interaction with Quick Actions if you’re using v62+, or Create Grab Interactions if you’re using a legacy version.
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.
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