# CommonUsages > Defines static variables that are used to retrieve input features from XR.InputDevice.TryGetFeatureValue. ## Definition * **Type:** Class * **Namespace:** [UnityEngine.XR](/engine/6000.7/script-reference/unityengine/xr.md) * **Assembly:** UnityEngine.XRModule ```csharp public static class CommonUsages ``` ## Remarks Use these static variables to retrieve common feature values by usage for an XR.InputDevice. ## Static Fields | Value | Description | | ------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [batteryLevel](/engine/6000.7/script-reference/unityengine/xr/commonusages/batterylevel.md) | Value representing the current battery life of this device. | | [centerEyeAcceleration](/engine/6000.7/script-reference/unityengine/xr/commonusages/centereyeacceleration.md) | The acceleration of the center eye on this device. | | [centerEyeAngularAcceleration](/engine/6000.7/script-reference/unityengine/xr/commonusages/centereyeangularacceleration.md) | The angular acceleration of the center eye on this device, formatted as euler angles. | | [centerEyeAngularVelocity](/engine/6000.7/script-reference/unityengine/xr/commonusages/centereyeangularvelocity.md) | The angular velocity of the center eye on this device, formatted as euler angles. | | [centerEyePosition](/engine/6000.7/script-reference/unityengine/xr/commonusages/centereyeposition.md) | The position of the center eye on this device. | | [centerEyeRotation](/engine/6000.7/script-reference/unityengine/xr/commonusages/centereyerotation.md) | The rotation of the center eye on this device. | | [centerEyeVelocity](/engine/6000.7/script-reference/unityengine/xr/commonusages/centereyevelocity.md) | The velocity of the center eye on this device. | | [colorCameraAcceleration](/engine/6000.7/script-reference/unityengine/xr/commonusages/colorcameraacceleration.md) | The acceleration of the color camera on this device. | | [colorCameraAngularAcceleration](/engine/6000.7/script-reference/unityengine/xr/commonusages/colorcameraangularacceleration.md) | The angular acceleration of the color camera on this device, formatted as euler angles. | | [colorCameraAngularVelocity](/engine/6000.7/script-reference/unityengine/xr/commonusages/colorcameraangularvelocity.md) | The angular velocity of the color camera on this device, formatted as euler angles. | | [colorCameraPosition](/engine/6000.7/script-reference/unityengine/xr/commonusages/colorcameraposition.md) | The position of the color camera on this device. | | [colorCameraRotation](/engine/6000.7/script-reference/unityengine/xr/commonusages/colorcamerarotation.md) | The rotation of the color camera on this device. | | [colorCameraVelocity](/engine/6000.7/script-reference/unityengine/xr/commonusages/colorcameravelocity.md) | The velocity of the color camera on this device. | | [deviceAcceleration](/engine/6000.7/script-reference/unityengine/xr/commonusages/deviceacceleration.md) | The acceleration of the device. | | [deviceAngularAcceleration](/engine/6000.7/script-reference/unityengine/xr/commonusages/deviceangularacceleration.md) | The angular acceleration of this device, formatted as euler angles. | | [deviceAngularVelocity](/engine/6000.7/script-reference/unityengine/xr/commonusages/deviceangularvelocity.md) | The angular velocity of this device, formatted as euler angles. | | [devicePosition](/engine/6000.7/script-reference/unityengine/xr/commonusages/deviceposition.md) | The position of the device. | | [deviceRotation](/engine/6000.7/script-reference/unityengine/xr/commonusages/devicerotation.md) | The rotation of this device. | | [deviceVelocity](/engine/6000.7/script-reference/unityengine/xr/commonusages/devicevelocity.md) | The velocity of the device. | | [eyesData](/engine/6000.7/script-reference/unityengine/xr/commonusages/eyesdata.md) | An Eyes struct containing eye tracking data collected from the device. | | [grip](/engine/6000.7/script-reference/unityengine/xr/commonusages/grip.md) | Represents the users grip on the controller. | | [gripButton](/engine/6000.7/script-reference/unityengine/xr/commonusages/gripbutton.md) | A binary measure of whether the device is being gripped. | | [handData](/engine/6000.7/script-reference/unityengine/xr/commonusages/handdata.md) | Value representing the hand data for this device. | | [isTracked](/engine/6000.7/script-reference/unityengine/xr/commonusages/istracked.md) | Informs to the developer whether the device is currently being tracked. | | [leftEyeAcceleration](/engine/6000.7/script-reference/unityengine/xr/commonusages/lefteyeacceleration.md) | The acceleration of the left eye on this device. | | [leftEyeAngularAcceleration](/engine/6000.7/script-reference/unityengine/xr/commonusages/lefteyeangularacceleration.md) | The angular acceleration of the left eye on this device, formatted as euler angles. | | [leftEyeAngularVelocity](/engine/6000.7/script-reference/unityengine/xr/commonusages/lefteyeangularvelocity.md) | The angular velocity of the left eye on this device, formatted as euler angles. | | [leftEyePosition](/engine/6000.7/script-reference/unityengine/xr/commonusages/lefteyeposition.md) | The position of the left eye on this device. | | [leftEyeRotation](/engine/6000.7/script-reference/unityengine/xr/commonusages/lefteyerotation.md) | The rotation of the left eye on this device. | | [leftEyeVelocity](/engine/6000.7/script-reference/unityengine/xr/commonusages/lefteyevelocity.md) | The velocity of the left eye on this device. | | [menuButton](/engine/6000.7/script-reference/unityengine/xr/commonusages/menubutton.md) | Represents a menu button, used to pause, go back, or otherwise exit gameplay. | | [primary2DAxis](/engine/6000.7/script-reference/unityengine/xr/commonusages/primary2daxis.md) | The primary touchpad or joystick on a device. | | [primary2DAxisClick](/engine/6000.7/script-reference/unityengine/xr/commonusages/primary2daxisclick.md) | Represents the primary 2D axis being clicked or otherwise depressed. | | [primary2DAxisTouch](/engine/6000.7/script-reference/unityengine/xr/commonusages/primary2daxistouch.md) | Represents the primary 2D axis being touched. | | [primaryButton](/engine/6000.7/script-reference/unityengine/xr/commonusages/primarybutton.md) | The primary face button being pressed on a device, or sole button if only one is available. | | [primaryTouch](/engine/6000.7/script-reference/unityengine/xr/commonusages/primarytouch.md) | The primary face button being touched on a device. | | [rightEyeAcceleration](/engine/6000.7/script-reference/unityengine/xr/commonusages/righteyeacceleration.md) | The acceleration of the right eye on this device. | | [rightEyeAngularAcceleration](/engine/6000.7/script-reference/unityengine/xr/commonusages/righteyeangularacceleration.md) | The angular acceleration of the right eye on this device, formatted as euler angles. | | [rightEyeAngularVelocity](/engine/6000.7/script-reference/unityengine/xr/commonusages/righteyeangularvelocity.md) | The angular velocity of the right eye on this device, formatted as euler angles. | | [rightEyePosition](/engine/6000.7/script-reference/unityengine/xr/commonusages/righteyeposition.md) | The position of the right eye on this device. | | [rightEyeRotation](/engine/6000.7/script-reference/unityengine/xr/commonusages/righteyerotation.md) | The rotation of the right eye on this device. | | [rightEyeVelocity](/engine/6000.7/script-reference/unityengine/xr/commonusages/righteyevelocity.md) | The velocity of the right eye on this device. | | [secondary2DAxis](/engine/6000.7/script-reference/unityengine/xr/commonusages/secondary2daxis.md) | A secondary touchpad or joystick on a device. | | [secondary2DAxisClick](/engine/6000.7/script-reference/unityengine/xr/commonusages/secondary2daxisclick.md) | Represents the secondary 2D axis being clicked or otherwise depressed. | | [secondary2DAxisTouch](/engine/6000.7/script-reference/unityengine/xr/commonusages/secondary2daxistouch.md) | Represents the secondary 2D axis being touched. | | [secondaryButton](/engine/6000.7/script-reference/unityengine/xr/commonusages/secondarybutton.md) | The secondary face button being pressed on a device. | | [secondaryTouch](/engine/6000.7/script-reference/unityengine/xr/commonusages/secondarytouch.md) | The secondary face button being touched on a device. | | [trackingState](/engine/6000.7/script-reference/unityengine/xr/commonusages/trackingstate.md) | Represents the values being tracked for this device. | | [trigger](/engine/6000.7/script-reference/unityengine/xr/commonusages/trigger.md) | A trigger-like control, pressed with the index finger. | | [triggerButton](/engine/6000.7/script-reference/unityengine/xr/commonusages/triggerbutton.md) | A binary measure of whether the index finger is activating the trigger. | | [userPresence](/engine/6000.7/script-reference/unityengine/xr/commonusages/userpresence.md) | 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, however you can reasonably infer that a user is present with the device when the property is `true`. |