How do I detect the position of hands and fingers in a vision app?

To detect the position of hands and fingers in a vision app, you can use the Vision framework's new Swift API. Here's a step-by-step guide based on the information from the WWDC sessions:

1. Create a Detect Human Body Pose Request:

   • Set the detectsHands property on the request to true. This will enable the detection of hands and fingers.

2. Process the Human Body Pose Observation:

   • The request will produce a human body pose observation, which includes properties for both the right hand and left hand observations.

Here's a brief recap from the session Discover Swift enhancements in the Vision framework:

Create a detect human body pose request and set detectsHands on the request to true. This request produces a human body pose observation, which now has two additional properties, one for the right hand observation and one for the left.

For more detailed implementation, you can refer to the chapter "Get started with Vision" in the session Discover Swift enhancements in the Vision framework.

Additionally, if you are working with RealityKit and VisionOS, you can set up spatial tracking of hand anchors to understand hand poses as described in the session Build a spatial drawing app with RealityKit.

For game development, you can use Unity's hand tracking package to access information about the player's joints, as mentioned in the session Explore game input in visionOS.

Relevant Sessions:

1. Discover Swift enhancements in the Vision framework
2. Build a spatial drawing app with RealityKit
3. Explore game input in visionOS

These sessions provide comprehensive guidance on how to implement hand and finger position detection in your vision app.