Over the last several years, Yubico has become close to ubiquitous in the field of hardware authentication. Its YubiKey token can act as a second layer of security for your online accounts, and even let you skip out on using passwords altogether. The only problem? It\u2019s been largely unusable on the iPhone. That\u2019s going to change soon. The upshot: Yubico has received MFi certification, meaning Apple will officially support it as a hardware partner.