# contactFilter

> The contact filter used to control which contacts this shape can participate in.

## Definition

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

```csharp
public PhysicsShape.ContactFilter contactFilter
```

### Remarks

This is exposed directly as a field rather than a property as it is extremely unlikely to ever change and causes usability issues as a property.