this post was submitted on 18 Jan 2025
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FIDO2 tokens (like Yubikeys and passkeys) can't be phished.
Yes, it's as easy as with the TOTP app. A message that says "ok, now tell us the code"
FIDO2/WebAuthn hardware tokens don't use a code. That's why they're phishing resistant. You have to press a hardware token (usually plugged in via USB) to authenticate, but it doesn't do anything obvious on the screen like type a code. On mobile, these tokens usually use NFC, so you just tap the Yubikey or whatever to the back of your phone.
Ah ok. Last time I had a hardware key it had a little display that showed numbers. I thought yubikey did the same thing.
That's pretty cool. Ideally I'd get something like a yubikey to unlock my password manager, except I'm not sure how the yubikey is supposed to interact with a desktop computer, especially a shared/public one.
Oh yeah, I had one of those a long time ago for my PayPal account, before smartphones were widespread.
I'm using a Yubikey with my password manager (self-hosted Vaultwarden) and it works well! The Yubikey is a USB device - you can get it either as a USB-C or USB-A. It should work with any desktop PC as long as USB devices are allowed. I've got one on my keychain, and a second one stored somewhere safe. Good to have a spare one as a backup just in case the main one dies.