Help:Two-factor authentication/nan

Two-factor authentication (TFA) is a system that requires an additional verification step before allowing an account to be logged into. The main MediaWiki extension providing this functionality is Extension:OATHAuth.

For an advanced translated help page, please visit Meta:Help:Two-factor authentication.

khé-iōng
You need the  user right to use TFA. If allowed, you will see a link in your preferences to enable it, or visit Special:OATH directly. Clicking on the link will display a QR code and a text code. Most smartphone apps will use the camera to scan the QR code, and automatically add the entry for the account to the list.

Khai-tuann tāi-bé
The special page will also list ten emergency "scratch codes" that can be used if you lose your phone. However, each code can only be used one time.

Iōng-hōo-tuann
First, you'll need a client application to store the TFA token and generate codes. Typically these are smartphone apps, but desktop clients are also available:


 * FreeOTP (free and open source, maintained by Red Hat) – Android and iOS
 * oathtool (command line)
 * Example of command line:  (the program returns 6 figures)

It is important to remember that you will need this device with you whenever you need to login.

Tsham-ua̍t

 * m:Help:Two-factor authentication
 * Wikimedia Security Team/Two-factor Authentication for CentralAuth wikis