How logins with biometric information work

You can log in using the biometric information (e.g. face, fingerprint) registered on your smartphone when accessing LINE on some sub devices and services provided by LINE.

Topics covered

- Requirements for using biometric logins
- Preparations for logging in with biometrics
- Steps for logging in with biometrics
- Disabling (turning off) logins with biometrics


Requirements for using biometric logins:
To use biometric logins, the smartphone with biometrics registered to it needs to meet our system requirements.

Also, you can log in with biometrics on iPad, Windows, and Mac.


Preparations for logging in with biometrics:
You can only follow the steps below on your main device (typically your smartphone).
 
To be able to log in to your LINE account on a sub device (except Chrome) using biometrics, you need to configure the following settings on your main device (typically your smartphone) beforehand.

iPhone

1. Register Face ID or Touch ID on your iPhone.
2. From your device's Settings, tap LINE and turn ON Face ID or Touch ID.

Android

1. Register your biometric information to your smartphone.
2. Allow biometrics to be used for logins in the LINE app.
Note: For details, check your phone manufacturer's website.

After configuring your device's settings, configure the following settings on the LINE app. You can only use this feature on your main device (typically your smartphone).

iPhone

1. Open LINE on the main device your account is registered to.
2. Tap the Home tab > > Account.
3. Tap Face ID/Touch ID > Enable.

You'll know setup is complete when you see Unlink next to Face ID/Touch ID.

Android

1. Open LINE on the main device your account is registered to.
2. Tap the Home tab > > Account.
3. Tap Link next to Device unlock method > Enable.

You'll know setup is complete when you see Unlink next to Device unlock method.

Steps for logging in with biometrics:

When logging in to LINE with biometrics for the first time:

PC (LINE for Windows/Mac)

1. Start LINE on your sub device.
2. Select Log in with my smartphone and enter the phone number registered to your LINE account.
3. Select Show verification code.
4. Start LINE on your main device (typically your smartphone).
5. Select the Home tab > > Account > Pair a new device.
6. Enter the verification code that appears on LINE on your sub device into LINE on your main device.
7. Authenticate the login with biometric information on your main device when prompted to do so.

Tablet (LINE for iPad)

1. Start LINE on your sub device.
2. Enter your phone number and select Log in with smartphone.
3. Select Show verification code.
4. Start LINE on your main device (typically your smartphone).
5. Select the Home tab > > Account > Pair a new device.
6. Enter the verification code that appears on LINE on your sub device into LINE on your main device.
7. Authenticate the login with biometric information on your main device when prompted to do so.

When logging in after the first time:

Tablet (LINE for iPad)

1. Start LINE on your sub device.
2. Select Log in with my smartphone and enter the phone number registered to your LINE account.
3. Start LINE on your main device (typically your smartphone).
4. Authenticate the login with biometric information on your main device when prompted to do so.

Tablet (LINE for iPad)

1. Start LINE on your sub device.
2. Enter your phone number and select Log in with smartphone.
3. Start LINE on your main device (typically your smartphone).
4. Authenticate the login with biometric information on your main device when prompted to do so.

“Login successful!” will appear when you're logged in. The LINE official account will also send a login notification message to you in the smartphone version of LINE.

 

Disabling (turning off) logins with biometrics:
You can only follow the steps below on your main device (typically your smartphone).

iPhone

1. Open LINE on the main device your account is registered to.
2. Tap the Home tab > > Account.
3. Tap Face ID/Touch ID > Disable.

Android

1. Open LINE on the main device your account is registered to.
2. Tap the Home tab > > Account.
3. Tap Unlink next to Device unlock method > Disable.

When you disable biometrics for logging in to LINE, you'll be logged out of LINE on any sub devices (LINE for iPad, Windows, Mac) you're using.