2D Keypoint Tracker

The 2D Keypoint Tracker component is designed to attach items to selected body parts, making it ideal for interactive experiences like virtual accessories. Optimized for mobile, this component offers reliable tracking without the processing demands of 3D tracking.

By integrating the Human Action Detection and Human Pose Estimation nodes, this object also supports pose estimation and movement recognition, allowing for interactive effects that respond dynamically to body movements, such as dance effects and gesture-based experiences.

Add the 2D Keypoint Tracker Component

To add a 2D Keypoint Tracker component:

Go to the Inspector panel
Click the + Add Component button
Go to AR Capability
Select 2D Keypoint Tracker

Properties

Property	Description
Body Part to Track	Select the body part, or tracking point, to bind to: Nose Left Eye Right Eye Left Ear Right Ear Neck Left Shoulder Right Shoulder Left Elbow Right Elbow Left Wrist Right Wrist Left Hip Right Hip Left Knee Right Knee Left Ankle Right Ankle For example, selecting Left Wrist allows you to attach virtual accessories, like a wristband, that will move with the user's hand.
Person to Track	Track the person closest (Body 1) or second closest (Body 2) to the camera. Only one person can be tracked at once.

Property

Description

Body Part to Track

Select the body part, or tracking point, to bind to:

Nose
Left Eye
Right Eye
Left Ear
Right Ear
Neck
Left Shoulder
Right Shoulder
Left Elbow
Right Elbow
Left Wrist
Right Wrist
Left Hip
Right Hip
Left Knee
Right Knee
Left Ankle
Right Ankle

For example, selecting Left Wrist allows you to attach virtual accessories, like a wristband, that will move with the user's hand.

Person to Track

Track the person closest (Body 1) or second closest (Body 2) to the camera. Only one person can be tracked at once.

Add the 2D Keypoint Tracker Component​

Properties​

Add the 2D Keypoint Tracker Component

Properties