Version: 2019.4
public static InputFeatureUsage<bool> userPresence ;

説明

Indicates whether the user is present and interacting with the device.

Use this property to test whether the user is currently wearing and/or interacting with the XR device. The exact behavior of this property varies with each type of device: some devices have a sensor specifically to detect user proximity, but you can reasonably infer that a user is present with the device when the property is UserPresenceState.Present.