Solo - Security Key

The first open source FIDO2 security key.

Two-Factor Authentication, U2F and FIDO2.

  • Secure your logins with two-factor authentication and stay protected against phishing and other online attacks.
  • Works with Google, Facebook, Twitter, Dropbox, Github, and anything that supports FIDO2 or FIDO U2F.
  • Fits USB-A or USB-C computer ports. Easy start guide.
  • Open source hardware and software. Firmware made in Europe; PCB made and Programmed in Europe.
  • Available in multiple colors. Add the Solo Cases Multi-Color Pack!

We also carry the miniature Somu Key that fits into your USB port.


Solo Cases Multi-Color Pack


 The Solo Key comes with:

  • A USB-A or USB-C compatible Solo Key
  • A set of two Cases, a Black and a Red Case


If you choose the Secure edition of the Solo Key, it comes provisoned, programmed, locked down and ready to use. It is the perfect version for you, your friends and parents. To get started with the Secure edition refer to the quick start guide. This version can only accept signed updates and is protected against readout.

If you choose the Hacker edition of the Solo Key, it also comes provisioned with secure key but it is not locked down and uses a different attestation key than the Secure version. The bootloader of the Hacker edition accepts unsigned firmware. Meaning you will be able to modify all aspects of the key firmware. You will have to lock it yourself to prevent keys being stolen by someone with physical access to the token. You can find the whole software source code of the Solo Key on Github.

If you choose the Tap edition of the Solo Key, you will be getting the Secure edition of the Solo Key with the added NFC communication capability. This way you can use your Solo Key with your NFC enabled smartphone.

Solo Key Tap does NOT work with every phone:

Survey results:

*iOS does not currently support NFC for FIDO2 or FIDO U2F*

As the SoloKey Tap may not work even with the phones listed above, we have to ask you to order that version on your own risk. We only offer full returns of the SoloKey Tap and you will have to send the key back to us at your own expense for a refund. Contact us if you have more questions.

For more information about the Solo Security Key refer to the documentation.

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