A Yubikey is a physical hardware authentication device used in multi-factor authentication. They enhance security by requiring a physical token in addition to passwords.

Example of Using the Yubikey

First, register the device you want to protect on an online service. When logging in, you’ll input your credentials as usual, and then you’ll be prompted to enter the Yubikey and press the button to confirm your authorisation.

How Does Yubikey Work?

Yubikey operates based on 2FA (two-factor authentication) principles and cryptographic methods. It is a small hardware device that connects to your device through a USB port, although some models support wireless connectivity.

Each Yubikey has a unique identifier and cryptographic keys embedded in its firmware to ensure a distinct identity.

What is YubiKey Used for?