---
title: "SMS Authentication"
slug: "sms-authentication"
updated: 2023-05-12T16:49:58Z
published: 2023-05-12T16:49:58Z
canonical: "help.rapididentity.com/sms-authentication"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.rapididentity.com/llms.txt
> Use this file to discover all available pages before exploring further.

# SMS Authentication

SMS or Mobile Text messages can be used as an authentication method.

To utilize SMS for authentication you must have the Mobile Number attribute (mobile) populated. If this is not populated from your source database you can allow end users to enter their mobile numbers and even require it as well by using this [article](/v1/docs/how-to-configure-an-attribute-to-be-end-user-editable).

To enable SMS Authentication

Configuration - Policies - Authentication - Authentication Policies

Select Authentication Methods then SMS and click Enable

![Screenshot 2023-05-12 at 10.32.15 AM.png](https://cdn.document360.io/4d958006-b877-42af-8de5-00e3bb7fe41d/Images/Documentation/Screenshot%202023-05-12%20at%2010.32.15%20AM.png)

With SMS Authentication enabled you wil see the following screen on login

![Screenshot 2023-05-12 at 10.37.39 AM.png](https://cdn.document360.io/4d958006-b877-42af-8de5-00e3bb7fe41d/Images/Documentation/Screenshot%202023-05-12%20at%2010.37.39%20AM.png)

The following text will be sent to the number in the mobile attribute to use to authenticate

![Screenshot 2023-05-12 at 10.38.05 AM.png](https://cdn.document360.io/4d958006-b877-42af-8de5-00e3bb7fe41d/Images/Documentation/Screenshot%202023-05-12%20at%2010.38.05%20AM.png)