Tap to Authenticate: NFC YubiKeys on Linux

Tap a YubiKey against your phone and the login just happens. Rest it on an NFC reader next to your Linux desktop and nothing happens at all: browsers on Linux only talk to security keys over USB, so the reader may as well not be plugged in. One small daemon closes that gap. Here’s how token2-fido-bridge works, the hardware on my desk, and the AUR package I published that makes the whole setup two commands on Arch.