It’s surprisingly easy to share two factor authentication among your peers (depending on your definition of ‘easy’). You’ll need just a little work on the command line to prove that any of you are, in fact, you.

Adding a second layer of authentication to your account is essential for your security, but like having a lock on your door, it can lock you out when things go wrong. You really need to think of the spare keys before that happens.

I bought a set of Yubikeys to figure out what the fuss was all about. Getting started was surprisingly painless and i now have a new authentication factor for Google, Github and Lastpass.