The Right Number of YubiKeys is Three

Four years ago I bought a pair of YubiKey 5s: One YubiKey 5 Nano, which fits in my laptop&rsquo;s USB slot, and another YubiKey 5 NFC as backup, which sat in my home office. However, I kept worrying about what happens if my house burns down or something, taking both my laptop and office YubiKeys together at the same time. On the otherhand, if I stored my YubiKey 5 NFC offsite, then whenever I…