> For the complete documentation index, see [llms.txt](https://docs.unisat.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.unisat.io/developer-support/enable-the-two-factor-authentication.md).
# Enable the two-factor authentication
Two-factor authentication (2FA) is an additional security feature that requires users to enter a six-digit verification code when logging into their accounts. This greatly enhances account security and effectively prevents unauthorized access.
For the safety of your account, we recommend setting up Two-factor authentication immediately after registering to provide an extra layer of protection.
**How to link Two-factor authentication？**
1. Enter UniSat [Developer Center](https://developer.unisat.io/dashboard), click on the avatar on the right side of the page and select '**2FA Setting**' from the dropdown menu.
2. Before binding 2FA, you need to confirm your email to ensure the operation is authorized by you. Click '**Send Code**' on the page, input the verification code received in your email, and click '**Submit**' to enter the 2FA binding page.
3. Follow the instructions on the page to first download and install an **authentication app**.
iOS: Search **Google Authenticator** in the App Store
Android: Search **Google Authenticator** in Google Play or use [this download link](https://play.google.com/store/apps/details?id=com.google.android.apps.authenticator2)
Then, use the authenticator app to scan the QR code on the page and enter the six-digit verification code in the authentication app.
4. Now you are done with 2FA! And of course, you can also disable 2FA if needed.