---
title: maximumNumberOfTrackedFaces
framework: arkit
role: symbol
role_heading: Instance Property
path: arkit/arfacetrackingconfiguration/maximumnumberoftrackedfaces
---

# maximumNumberOfTrackedFaces

The number of faces to track during the session.

## Declaration

```swift
var maximumNumberOfTrackedFaces: Int { get set }
```

## Discussion

Discussion The default value is one. Set the maximum number of tracked faces to limit the number of faces that can be tracked in a given frame. Check the value of supportedNumberOfTrackedFaces before setting this property. No new anchors will be provided to your delegate’s session(_:didAdd:) if more than the maximum number of faces are visible in the camera feed. In that case, ARKit continues to track the faces that already have associated face anchors.

## See Also

### Tracking Multiple Faces

- [supportedNumberOfTrackedFaces](arkit/arfacetrackingconfiguration/supportednumberoftrackedfaces.md)