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# Authentication application setup

> Set up two-factor authentication (2FA) using a mobile app in the Zuora OneID application.

Set up two-factor authentication (2FA) using a mobile app in the Zuora OneID application.

Log in to the Zuora OneID application. You will be prompted to set up 2FA or SMS-based authentication the first time you log in after the MFA is enabled.

Select **Use a mobile app** and click **Next**. You will be prompted to scan a QR code.

Scan the code, using your preferred authentication application on your mobile phone or tablet.

Click **Next**.

Enter the authentication code generated by your application.

If you don't want to be prompted to enter another code on that particular machine and browser for 30 days, select the **Remember me for 30 days** checkbox. If you sign in to OneID from various machines or browsers, you must set up 2FA for every machine or browser.

If you set up Two-factor authentication on a trusted machine and safe browser, that you use to access Zuora regularly, Zuora recommends enabling **Remember me for 30 days**. If you access OneID on a public machine or an unsafe browser, Zuora does not recommend enabling **Remember me for 30 days**.

Click **next**. After you've entered the correct authentication code, a success message will be displayed.

You can retrieve the latest code generated by the authentication application by Zuora.