***

id: 0b250afc-29c1-4df3-a22c-8225fefa7974
title: lock
slug: /node/reference/video/room-session/lock
description: lock method for the RoomSession class.
max-toc-depth: 3
----------------

### lock

* **lock**(`params`): `Promise<void>`

Locks the room. This prevents new participants from joining the room.

#### Returns

`Promise<void>`

#### Example

```js
await roomSession.lock();
```