# Enabling Two Factor Authentication

Two factor authentication (also known as 2FA) is a highly recommended security feature that adds an extra layer of protection to your tiny+ user account. 

Enabling two factor authentication means that tiny+ will require a seven digit security code (in addition to your password) when you sign in to your account from a new browser, phone or tablet.

In order for two-step verification to work correctly, you'll need a mobile device capable of receiving SMS messages and running the [Authy](https://authy.com/download/) iOS or Android app.

## How to enable Two Factor Authentication

1. Sign in to [crm.tiny.plus](https://crm.tiny.plus/).
2. Click the settings cog in the top right of the screen.
3. Choose **User Settings**.
4. Select the **Security** tab.
5. Under the Two Factor Authentication section, verify your **Country Code** and **Mobile Number**, then click **Register**.
6. You will **receive an SMS** message with instructions to install the [Authy ](https://authy.com/download)app on your phone.
7. Install the Authy app, then enter the seven digit security code in the **Verification** field back in tiny+.

## How to change your Two Factor Authentication phone number

1. Sign in to [crm.tiny.plus](https://crm.tiny.plus/).
2. Click the settings cog in the top right of the screen.
3. Choose **User Settings**.
4. Select the **Security** tab.
5. Under the Two Factor Authentication section, toggle the **master switch** to turn off Two Factor Authentication.
6. Then follow the steps above to enable Two Factor Authentication on a new device.