9 lines
540 B
Markdown
9 lines
540 B
Markdown
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---
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uid: arsubsystems-participant-subsystem
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---
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# XR participant subsystem
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This subsystem provides information about other users in a multi-user collaborative session. It is a type of [tracking subsystem](index.md#tracking-subsystems) and follows the same `GetChanges` pattern to inform the user about changes to the state of tracked participants. Its trackable is [`XRParticipant`](xref:UnityEngine.XR.ARSubsystems.XRParticipant).
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Participants are detected automatically, like planes or images. You can't create or display participants.
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