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The Solo (or SoloKey) is a small USB Security token supporting Universal 2nd Factor (U2F) requests, thus acting as a second factor for authentication. It also supports the newer FIDO2 standard allowing for passwordless logins.

Compared to a YubiKey it offers less features, but supports firmware upgrades to extend the functionality in the future. The key-hardware and software are released as open source. The keys are distributed in different form factors and two versions: Solo V1 (STM32L432 chip) and Solo V2 (LPC55S69 chip).

## Installation

Special drivers are not required for the key to work. It is recommended to install the Solo software and upgrade the firmware of your Solo.

### Upgrading the firmware

This article or section is out of date.

Reason: project is now available as solo1-cli and solo2-cli (Discuss in Talk:Solo)

Managing your Solo V1, e.g. upgrading the firmware or setting a PIN, can be performed with the solo-pythonAUR package. After installing the package, first check if your key is detected:

    $ solo ls

    :: Solos
    123456XXXXXX: SoloKeys Solo 3.0.1

Then you can use `solo key update` to perform a firmware upgrade, `solo key set-pin` to set a PIN, and `solo key change-pin` to change your pin.

### Test the Solo in your browser

Visit the Webauthn demo, type in a username and click on "Register". Your Solo's LED will flash until you click it. After that, you can login to the page only using your Solo, no need for username or password.

## See also

- SoloKeys Official Website
- Solo Technical Documentation

Categories:

- Smartcards
- Universal 2nd Factor

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