Two-factor authentication
Two-factor authentication (2FA) serves as a security measure for identity and access management, necessitating the use of two distinct forms of identification for accessing resources and data.
To implement the two-factor authentication, go to Settings > Users.
![two-factor_authentication4.png](../../image/166a379a54130b.png)
Then, next to the Invite User button in the upper right corner, you can find the possibility to Enforce 2FA.
![Reepay_Admin_-_Users_2FA.png](../../image/166a379a54a194.png)
When Enforce 2FA is activated, users have to identify themselves via their mobile phone, in order to login to Billwerk+. If the two-factor authentication is activated, it apples for the whole account.
All existing and new users will have to use 2FA starting with their next login, like showed here.
![two-factor_authentication.png](../../image/166a379a5506a2.png)
To activate this feature, users need to download and set up an authentication app such as Google Authenticator, Microsoft Authenticator, and others.
Following this they scan a QR code and fill the 6-digit one-time password provided by the authenticator app.
![two-factor_authentication_2.png](../../image/166a379a55ba05.png)
The 2FA will be mandatory for each subsequent login.
In the user settings, you have the ability to review who has currently implemented 2FA :
![two-factor_authentication_3.png](../../image/166a379a567570.png)