---
title: "isJointTracked(_:)"
framework: arkit
role: symbol
role_heading: Instance Method
path: "arkit/arskeleton/isjointtracked(_:)"
---

# isJointTracked(_:)

Tells you whether ARKit tracks a joint at a particular index.

## Declaration

```swift
func isJointTracked(_ jointIndex: Int) -> Bool
```

## Discussion

Discussion Use this function to determine which joints ARKit tracks using a particular index.

## See Also

### Getting Joint Information

- [definition](arkit/arskeleton/definition.md)
- [ARSkeleton.JointName](arkit/arskeleton/jointname.md)