Set up / disable two-factor authentication

🌐 This article has been translated from Korean for your convenience. If there is any discrepancy, the Korean version prevails.

What is two-factor authentication?

  • Every time you log in with email, you enter a code sent via an authenticator app to verify your account, adding an extra layer of security to your account.
  • Two-factor authentication is not supported for social login (Google, Naver, Facebook). Please use the login/authentication features provided by those social services.

 

How to log in with two-factor authentication

  1. Enter your ID and password.
  2. Enter the two-factor authentication code generated by your authenticator app.

 

Set up two-factor authentication

  1. [My menu] > [Settings] > [Account], then turn on the "Two-factor authentication (OTP authenticator app)" button in the Security settings.
  2. Enter your password to verify your identity.
  3. Install an OTP authenticator app (Google Authenticator, Authy, etc.) on your device.
  4. In the POSTYPE app, enter the two-factor authentication setup key (16 characters in uppercase letters and numbers) into your authenticator app.
  5. Once your POSTYPE account and the authenticator app are linked, tap the "Next" button and enter the verification code generated by the authenticator app.
  6. Tap "Done" to enable two-factor authentication. For your account security, automatic login will be disabled and you will be logged out from all devices and browsers.

 

Disable two-factor authentication

 

Check your one-time backup codes

  • If you lose your device or delete your authenticator app and can no longer access your two-factor authentication codes, you can log in using one-time backup codes.
  • Go to [My menu] > [Settings] > [Account], tap "View one-time backup codes" in the Security settings, then enter your password to view your one-time backup codes.
  • Each one-time backup code can only be used once when logging in.
  • We recommend saving them as a screenshot or storing them separately.
  • When logging in, tap "Verify with one-time backup code" at the bottom of the screen to enter a one-time backup code.

 

I can’t complete two-factor authentication.

  • If you saved your one-time backup codes separately, you can log in using those one-time backup codes.
  • If you did not save your one-time backup codes, please contact the Help Center.

 

A message says that two-factor authentication is required.

When your POSTYPE account is accessed from too many devices, POSTYPE requires two-factor authentication. This is to keep your account safer and to prevent sharing your account with others.

If you follow the on-screen instructions to set up two-factor authentication, you will be able to log in normally and use POSTYPE. Without two-factor authentication, your use of the account will be restricted, and we cannot disable this mandatory measure because it is essential for security.

  • If you did not share your account and have not accessed it from 3–4 or more personal devices, we recommend taking additional security steps such as changing your password. For more details, please see Guidelines for protecting your personal information and account.
  • If you are sharing your account or using a shared account, please stop sharing immediately. If you continue to violate our Account trading policy and we detect continued account sharing, we may take additional actions such as account suspension, permanent restriction for the same identity, and legal action.
Two-Factor Authentication