Individuals and businesses are using YubiKey to add an additional layer of security to their applications. We have step-by-step instructions showing just how easy it is to add YubiKey authentication.
No client software or drivers need to be installed, no batteries, no moving parts.
Secure an unlimited number of applications and logins. Works on Windows, Mac OS X, Linux
Crush and water-resistant. Weighing only 3g with smaller nano size at only 1g
You can also find help on the Yubico FAQ.
Setup is easier and only takes a minute, you can follow the directions in the this post.
It is very simple to disable YubiKey authentication, simply follow the steps here.