You might be able to using PAM. Something to look into, hopefully you can still use these guides with the latest macOS: https://developers.yubico.com/yubico-pam

You might be able to using PAM. Something to look into, hopefully you can still use these guides with the latest macOS: https://developers.yubico.com/yubico-pam/MacOS_X_Challenge-Response.html https://developers.yubico.com/yubico-pam/MacOS_X_Challenge-R...