The Complete Guide to Login Plus
Complete guide to Login Plus service and features.
Login Plus is a unified authentication service provided by mobile carriers in Korea. With a single account, you can easily sign in to a wide variety of websites while benefiting from robust security features.
Table of Contents
1. Service Overview
Login Plus is a unified login service based on mobile phone identity verification.
[Key Features]
- One ID for logging into multiple websites
- Based on mobile phone identity verification
- Passwordless simple login
- Minimal personal information sharing
- Two-factor authentication support
[Providers]
SKT PASS
KT Auth
LG U+ Identity Verification
[Cost]
Free of charge
2. Sign Up and Setup
[How to Sign Up]
1. Download the Login Plus app
- Available on Google Play / App Store
- Search for 'PASS' or your carrier name
2. Identity verification
- Enter your mobile phone number
- Enter the SMS verification code
3. Set up a PIN
- 6-digit PIN
- Register biometrics (fingerprint / face)
4. Registration complete
- Ready to use immediately
[Biometric Authentication Setup]
- Fingerprint: fast and convenient
- Face recognition: limited when wearing a mask
- PIN: required as a backup method
3. How to Use
[Logging into Websites]
1. Go to the login page
2. Click the "Login Plus" button
3. The app launches automatically
4. Authenticate with biometrics or PIN
5. Login complete
[Supported Sites]
- Government: Government24, HomeTax
- Finance: banks, brokerages
- Shopping: Coupang, 11st
- Social: Naver, Kakao
- Delivery: Baemin, Coupang Eats
[QR Code Login]
1. Display QR code on PC
2. Scan QR with the app
3. Biometric authentication
4. Automatic login
[Auto-Login Settings]
- Register trusted devices
- Auto-login for a set period
- Automatically deactivated if a security risk is detected
4. Security Settings and Management
[Enhancing Security]
1. Enable two-factor authentication
- Login + additional SMS verification
- Recommended for sensitive sites
2. Review login history
- Check recent login activity
- Get alerts for suspicious logins
3. Manage linked accounts
- View connected sites
- Disconnect unused links
4. Update your credentials
- Change PIN periodically
- Re-register biometric data
[Scope of Personal Information Shared]
- Required: name, date of birth
- Optional: email, address
- Configurable per site
- Recommended to share minimal information only
5. Troubleshooting and Alternatives
[If the App Won't Open]
- Update the app to the latest version
- Restart your smartphone
- Reinstall the app
[Biometric Authentication Failure]
- Re-register fingerprint or face
- Log in using your PIN
- Make sure your finger or face is clean
[Forgot PIN]
- Reset via identity verification
- Contact customer support
- Visit in person with a valid ID
[Deleting Your Account]
1. App > Settings > Withdraw membership
2. Identity verification
3. Account deletion complete
4. You can re-register at any time
[Alternative Services]
- NAVER Login
- Kakao Login
- Google Login
- Apple Login
Key Tips
- •Set up both biometric authentication and a PIN to ensure you always have a backup login method.
- •Check your login history regularly to detect any unauthorized access.
- •Avoid using auto-login on shared or public devices.
- •Enabling two-factor authentication significantly improves your account security.
- •Disconnect any site links you no longer use to minimize security exposure.
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