Meet the YubiKey 4 Series – Two Factor Authentication Made Easy

All-in-one configurable security key

With a simple touch, the YubiKey protects access to computers, networks, and online services. Touch to trigger FIDO U2F, smart card (PIV), Yubico OTP, Code Signing, OpenPGP, OATH-TOTP, OATH-HOTP, and Challenge-Response.

Easier and safer than authenticator apps

No more reaching for your smartphone, or re-typing passcodes. Just plug in your YubiKey, tap, and it does the rest for you.

Works with hundreds of services

Designed to work off-the-shelf, the YubiKey works with Facebook, Gmail, GitHub, Dropbox, Dashlane, LastPass, Salesforce, Duo, Docker, Centrify, and many more services.

YubiKey 4 | $40
Best Seller! 4th Generation multi-protocol authentication device.

YubiKey 4 Nano | $50
Sleek minimalist design! Same features as YubiKey 4 and YubiKey 4C, but designed to stay inside the USB port.

YubiKey 4C | $50
Includes all the functionality of YubiKey 4. Designed for devices featuring USB-C ports.

YubiKey 4C Nano | $60
Same features as YubiKey 4 Nano, YubiKey 4, and YubiKey 4C, ultra-slim USB-C form factor.

Choice of Form Factor

  • All YubiKey 4 form factors include the same functionality
  • The original YubiKey 4 features a durable USB-A body designed for keychains so it goes everywhere you do — just like your keys
  • YubiKey 4 Nano features a slim USB-A form factor for semi-permanent installation and convenience
  • YubiKey 4C Nano features a ultra-slim USB-C form factor in the latest Mac, PC, & Android computing devices.

Core Features

  • Secure: Prevents unauthorized access by requiring the physical presence of the key to login on that device
  • Easy to use: Plug it in and touch the gold button or edge; no codes to type or apps to install
  • Affordable: The same YubiKey can be used with nearly unlimited services, and prices starts at just US$40 per unit
  • Everywhere: Use it on Microsoft Windows, Mac OS X, Linux, and Chrome OS for Chromebooks
  • Convenient: Fits nicely on a keychain, in a wallet, or inside a USB port
  • Easy to set up: Users self-provision their YubiKey
  • Manufactured in USA and Sweden with high security and quality

Special Features

  • Works on Microsoft Windows, Mac OS X, Linux operating systems, and on major browsers
  • Hardware secure elements guard your encryption keys
  • RSA 4096 for OpenPGP
  • Support for PKCS#11

Using your YubiKey

Go to for instructions on how to set up your YubiKey with each service. Steps to enroll your YubiKey may differ from service to service.

Compare YubiKey models