---
url: /process-functions/security-getusername.md
description: Get the full name of a user from their user id.
---

# security.getUserName 

Get the full name of a user from their user id.

::: warning Deprecated
Use [`userSecurity.users.get(userId).getName()`](/process-functions/userSecurity-user#getname) instead.
:::

```js
security.getUserName(userId)
```

## Parameters

| Parameter | Type | Description |
|---|---|---|
| `userId` | `number` | User ID |

## Returns

The user's full name, or `null` if the user was not found.

## Examples

```js
const userName = security.getUserName(1234); // "Jane Doe"
```