# userData

> Get/Set PhysicsUserData that can be used for any purpose. The physics system doesn't use this data, it is entirely for custom use.

## Definition

* **Type:** Property
* **Namespace:** [Unity.U2D.Physics](/engine/6000.5/script-reference/unity/u2d/physics.md)
* **Assembly:** UnityEngine.PhysicsCore2DModule

```csharp
public PhysicsUserData userData { get; set; }
```