Yubikey guide for Git Signing, SSH Auth, U2F 2FA, and 1Password (2017) 7 years ago
You can store your 1Password master password (or any other static password) on your yubikey with a few of the last characters missing. You'll plug the yubikey in, press the button and manually type the missing characters to complete the password. This way if you lose it, however finds it has an incomplete password and no idea where it belongs to.