## Zoho Invoice — Product, features, payments, integrations, solutions, and help Index Access the complete documentation index at: https://www.zoho.com/de-de/invoice/llms.txt Use this file to discover all available documentation pages before proceeding. [Back](./) # What is Multi-Factor Authentication (MFA) and how do I enable it for my Zoho Invoice account? Zoho supports Single Sign-On (SSO), which means you can access any service with a single sign-in and credentials. Additionally, it supports Multi-factor Authentication that adds a layer of security while signing in to your accounts. The different MFA modes that are currently supported are **Zoho OneAuth and Security Key.** To enable MFA for your Zoho account: * Go to [accounts.zoho.com](https://accounts.zoho.com/) and log in with your registered email address and password. * Click **Multi-Factor Authentication** on the left sidebar to view the different MFA modes. * Select the MFA mode you prefer and click **Set up Now.** * Follow the instructions listed for the MFA mode you selected to enable it for your Zoho account. Once you’ve set up MFA, future sign-ins will require you to verify your identity to prevent unauthorized access to your account.