Can you explain a little more how you handle them in your daily life? I always liked the idea if Yubikeys, but I am a bit worried that I just would switch back to my phone (Aegis) for convenience.

I have two Yubikey 5 NFC’s, one I keep majority of my 2Fa auth codes on and keep on my keychain the other I leave at home mainly for backup 2Fa setups or desktop/WebAUTH/Single Sign-On logins, most websites won’t let you setup 2 2Fa keys so the second one mostly handles the plug-in and touch key portion of my setup.

Are they inconvenient? Yes, the amount of times where I got annoyed because I’ve had to grab my keychain to sign in has gotten annoying but not enough to switch back to online providers. I prioritized security over convenience in this circumstance. The Yubikey that I keep on my keychain also handles my work 2Fa codes, doesn’t feel necessary to have a dedicated key for that unless my company is willing to pay for it.

Do you just have it on your keychain a plug it in whenever you need it? Because always plugged in keys in your phone or laptop doesn’t really make sense.

It actually works out quite nice having it plugged in all the time, especially if you’re doing multiple 2Fa authentications, the keys won’t authenticate until you enter the password of the key (if you set one up) and touch the key, so even if your computer is compromised they still need to physically touch the key to generate the authentication codes.

As far as I know you can’t just clone a key.

So no you cannot clone a Yubikey to another Yubikey, which I think is dumb, but they have their security reasoning behind it I believe. Like I mentioned earlier all my 2Fa codes/keys are on my keychain so if I break that key I am in a horrible position as I lose access to a lot of accounts that I couldn’t setup multiple 2Fa’s for.

How easy is it to setup a backup key?

While Yubico does recommend having two keys as I mentioned certain services only let you setup 2Fa once and not multiple times. However, Linux (and I want to assume Windows as well) let you setup as many 2Fa keys as you want, so both the Yubikey on my keychain and the one I leave at home both grant Root access to my desktop and server.

I try to not use my phone for critical stuff, but there are times I have to just check an account. Do you use your phone with Yubikeys?

So I don’t have a USB C Yubikey ironically both my iPhone and iPad are USB C so I have the option to use a dongle or NFC, both have worked great, I have had a couple scares where the app will error and say “No response from key” but it seems that error is due to bad contact/connection. I’ve attached a few images of the iOS app to help get an idea of the layout.