# 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:** [UnityEngine.LowLevelPhysics2D](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d.md)
* **Assembly:** UnityEngine.Physics2DModule

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