VRDevice.hardwareUnitId

Obsolete
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The hardwareUnitId read-only property of the VRDevice interface returns the distinct hardware ID for the overall hardware unit that this VRDevice is a part of. All devices that are part of the same physical piece of hardware will have the same hardwareUnitId.

Syntax

var hardwareID = VRDevice.hardwareUnitId;

Value

A DOMString containing the ID of the overall hardware unit.

Examples

The following snippet (see our VRDevice example) returns an array of all the VRDevices connected to your computer via Navigator.getVRDevices(). For each connected device it then prints out the hardwareUnitId, VRDevice.deviceId, and VRDevice.deviceName.

var list = document.querySelector('ul');
var info = document.querySelector('p');
if(navigator.getVRDevices) {
  navigator.getVRDevices().then(function(myDevices) {
    reportDevices(myDevices);     
  });
} else {
  info.textContent = 'WebVR API not supported by this browser.'
}

function reportDevices(devices) {
  for(i = 0; i < devices.length; i++) {
    var listItem = document.createElement('li');
    listItem.innerHTML = 'Device ' + (i+1)
                 + ': <strong>Hardware ID</strong>: ' + devices[i].hardwareUnitId
                 + ', <strong>VD Device ID</strong>: ' + devices[i].deviceId
                 + ', <strong>VR Device Name</strong>: ' + devices[i].deviceName
                 + '.';
    list.appendChild(listItem);
  }
}

Specifications

Specification	Status	Comment
WebVR The definition of 'hardwareUnitId' in that specification.	Editor's Draft	Initial definition

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	(Yes)^[1]	39 (39)^[2]	No support	No support	No support

Feature	Android	Firefox Mobile (Gecko)	Firefox OS (Gecko)	IE Phone	Opera Mobile	Safari Mobile	Chrome for Android
Basic support	No support	39.0 (39)^[2] 44.0 (44)^[3]	No support	No support	No support	No support	No support

[1] The support in Chrome is currently experimental. To find information on Chrome's WebVR implementation status including supporting builds, check out Bringing VR to Chrome by Brandon Jones.
[2] The support for this feature is currently disabled by default in Firefox. To enable WebVR support in Firefox Nightly/Developer Edition, you can go to about:config and enable the dom.vr* prefs. A better option however is to install the WebVR Enabler Add-on, which does this for you and sets up other necessary parts of the environment.
[3] The dom.vr* prefs are enabled by default at this point, in Nightly/Aurora editions.

VRDevice.hardwareUnitId

Syntax

Value

Examples

Specifications

Browser compatibility

See also

Document Tags and Contributors