Too Long; Didn't Read
Disclaimer: I’m working on Solo, the first open source security key to support the new FIDO2 standard. Solo is available at <a href="https://solokeys.com" target="_blank">solokeys.com</a>. In the US, you can also buy it from <a href="https://amzn.to/2Dp7ibE" target="_blank">Amazon</a>.