Use the YubiKey PIV Manager to pair your YubiKey with macOS Sierra logins.
You can also use the YubiKey PIV Manager for Windows authentication (requires a domain login) to establish an active connection to the Windows Certification Authority, set and change PINs and Personal Unlocking Keys (PUKs), request certificates from a Certification Authority, manage certificates, and reset the PIV applet.
Use the Yubico PIV Tool, with the command line interface, to administer a PIV-enabled YubiKey. This tool is intended for system administrators or more advanced users.
(These tools work on all Yubico devices except for the FIDO U2F Security Key.)
YubiKey PIV Manager (with graphic interface) v1.4.1
YubiKey PIV Tool (command line) v1.4.2