VRDevice

The VR Device interface of the WebVR API represents a generic VR device connected to the user's computer.

An array of all connected VR Devices can be returned by invoking the Navigator.getVRDevices() method. There are two specific classes of VR device, both of which inherit the VR Device interface:

• PositionSensorVRDevice: A position sensor camera, which returns information such as head orientation and absolute position.
• HMDVRDevice: A VR head mounted display.

Properties

VRDevice.hardwareUnitId Read only

Returns the distinct hardware ID for the overall hardware unit that this VRDevice is a part of. All the devices that are a part of the same physical piece of hardware have the same hardwareUnitId.

VRDevice.deviceId Read only

Returns the ID for this specific VRDevice. The ID shouldn’t change across browser restarts, allowing configuration data to be saved based on it.

VRDevice.deviceName Read only

A human-readable name to identify the VRDevice.

Examples

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

Browser compatibility

• [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.

See also

• WebVR API homepage.
• MozVr.com — demos, downloads, and other resources from the Mozilla VR team.