> For the complete documentation index, see [llms.txt](https://epochsec.gitbook.io/daily-activities-best-practices/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://epochsec.gitbook.io/daily-activities-best-practices/two-factor-authentication.md).

# Two Factor Authentication

Overview

The YubiKey, developed by Yubico, is a physical two-factor authentication (2FA) device. It protects your online accounts from account compromisation and unauthorized access. In this article, we will explore the benefits of the YubiKey 5C series and provide step-by-step instructions on how to use it to enhance your digital security.