# Turn on two-factor authentication

> Set up an authenticator app, text message or email codes in Settings > Profile. Owners and Admins can make two-factor required in Organisation Settings.

Source: https://useline.io/help/team/two-factor-authentication  
Section: Team and security  
Last updated: 2026-11-05

Two-factor authentication asks for a 6-digit code after your password. Any person can set it up for their own account. An Owner or Admin can turn it on for the whole workspace and make it required.

## Methods

| Method | How you get the code |
|---|---|
| **Authenticator app** | An app on your phone shows a new code every 30 seconds. The app lists the account as "Line". |
| **Text message** | Line texts a code to your mobile. Each text uses workspace credit. |
| **Email** | Line emails a code to your account email address. The code expires after 10 minutes. |

## Set up a method for yourself

1. Open **Settings** > **Profile** ([/settings?tab=profile](https://useline.io/settings?tab=profile)).
2. Go to **Two-factor authentication**.
3. On the method that you want, select **Set up**.
4. Follow the steps. For an authenticator app, scan the QR code. For text messages, enter your **Mobile number**.
5. Enter the 6-digit code and select **Verify**.

Then make your recovery codes:

1. On **Recovery codes**, select **Set up**.
2. Select **Copy**, **Download** or **Print**, and keep the codes in a safe place.
3. Tick **I have saved these codes**.
4. Select **Done**.

If you set up your first method on the sign-in screen, Line shows **Save your recovery codes** straight after it. Line then offers **Add a backup method**. Add a second method, or select **Not now**.

## Recovery codes

You get ten recovery codes. Each code works one time. Use a code when you cannot use your other methods.

- To see how many codes are left, look at **Recovery codes** in **Settings** > **Profile**.
- To make new codes, select **Regenerate**. Your old codes stop working.

## Turn on two-factor for the workspace

You need the **Owner** or **Admin** role.

1. Open **Settings** > **Organisation Settings** ([/settings?tab=account](https://useline.io/settings?tab=account)).
2. In **Two-factor authentication**, select **On**.
3. For **Requirement**, select **Required** or **Optional**.
4. In **Allowed methods**, select one or more methods.
5. Optional: in **Remember devices**, choose how long a browser stays trusted. The choices are **Off — ask at every sign-in**, 1, 7, 14, 30 or 90 days.
6. Select **Save**.

| Requirement | What members see |
|---|---|
| **Required** | Every member must pass a code to open the workspace. A member with no method sets one up first. |
| **Optional** | A member who joins by invite sees the setup screen one time, with **Skip for now**. |

The **Member two-factor** table shows each member and the methods they have, or **Not set up**.

When the workspace remembers devices, the code screen shows a **Remember this device for** box. A member who ticks it does not enter a code in that browser for the period you set. To make every member enter a code at their next sign-in, select **Forget all devices**.

Each member can see and forget their own remembered browsers in **Settings** > **Profile** > **Remembered devices** > **Manage**.

Line emails a person when a method is added or removed, when a recovery code is used, and when their two-factor is reset.

## Reset a member's two-factor

Use this when a member loses all their methods and recovery codes.

1. Open **Settings** > **Team**.
2. Select the actions menu on the member's row.
3. Select **Reset two-factor**.
4. Select **Reset two-factor** again to confirm.

The member loses all methods, recovery codes and remembered devices. Line signs them out everywhere. They set up a method at their next sign-in.

An Owner can reset any person except themselves. An Admin can reset only Members. If the person also uses another Line workspace, Line support must do the reset.

## Common problems

**I lost my phone.** On the code screen, select **Use a recovery code**. If you have no codes, select **Cannot verify? Get help**. See [Fix sign-in problems](https://useline.io/help/troubleshooting/sign-in-problems).

**I cannot remove a method.** While two-factor is required, you cannot remove your last allowed method. Add another method first.

**Text message codes do not arrive.** The workspace needs credit and a number that can send texts. Use another method, or ask an Admin to top up.

**I signed in with an email code and Line does not accept email for two-factor.** An email code cannot confirm an email sign-in. Use another method, a recovery code, or sign in with your password.

## Related articles

- [Fix sign-in problems](https://useline.io/help/troubleshooting/sign-in-problems.md): Reset a forgotten password, sign in with an email code, or use a recovery code if you lost your two-factor device. Then contact support.
- [Understand roles and permissions](https://useline.io/help/team/roles-and-permissions.md): Line has three roles. The Owner and Admins can change the workspace. Members use the inbox and calls but cannot change settings.
- [Invite team members to your workspace](https://useline.io/help/team/invite-team-members.md): Go to Settings > Team, select Invite a teammate, enter their email and role, then send. The invite link works for seven days.
- [How credits and the credit wallet work](https://useline.io/help/billing/credits-and-usage.md): Line is prepaid. Calls, texts, WhatsApp, extra email and AI replies use credits from your wallet. One credit is 1p. Automatic top-up refills it.