I just wanted to call out this guide: https://github.com/drduh/YubiKey-Guide If you're trying to set up hardware level security using yubikeys, it is invaluable. It takes some time and preparation, but the results are that you have a system where you can definitively say that your code is signed by you, your connections are authenticated as being yours, and nobody can use your digital identity but you. Even if you leave the YubiKey in the computer all the time, as long as you've turned on mandatory touch to unlock. It's really nice. #security #yubikey