Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

Warning: UserProximityEvent is not supported by any current major browser, and should not be used.

The UserProximityEvent indicates whether a nearby physical object is present by using the proximity sensor of a device.


UserProximityEvent.near Deprecated Non-Standard

Indicates if the device has sensed a nearby physical object.


window.addEventListener('userproximity', (event) => {
  if (event.near) {
    // let's power off the screen
    navigator.mozPower.screenEnabled = false;
  } else {
    // Otherwise, let's power on the screen
    navigator.mozPower.screenEnabled = true;

Browser compatibility

BCD tables only load in the browser

See also