automatic reference count

It seems like you're interested in object tracking and related technologies discussed at Apple's WWDC. While the context provided doesn't directly mention "automatic reference count," it does cover various aspects of object tracking, particularly in the context of ARKit and visionOS.

Here's a brief overview of the relevant sessions:

1. Create enhanced spatial computing experiences with ARKit: This session discusses how to track physical items using ARKit by creating reference objects and using them in object tracking providers. It also covers improvements in world tracking and how to anchor virtual content to tracked objects. Object tracking is a key focus.

2. Explore object tracking for visionOS: This session explains how to create reference objects using CreateML and how to anchor virtual content to these objects. It provides a step-by-step guide on training machine learning models for object tracking. Create reference object is a significant part of this session.

3. Introducing enterprise APIs for visionOS: This session introduces new features for enterprise customers, including enhanced known object tracking with configurable parameters. It allows for tuning and optimizing object tracking to suit specific use cases. Enhanced sensor access and Platform control are discussed.

If you have specific questions about these technologies or need more detailed information, feel free to ask!