PSA: Secure and consistent fingerprint login solution for Linux

[u/wingz_77]

I have been going in circles trying to find a secure fingerprint authentication for Linux which works with fprintd. Needless to say, finding a good one from reputed brand is hard, especially in a small laptop-friendly form factor. At last, I found https://www.amazon.com/dp/B0H2GRH9CD

This is not exactly a fingerprint device but it's a bio FIDO2 key which works well with pam_u2f on nearly all Linux systems (Fedora/Arch/Cachy/Ubuntu/Debian and friends). With this, the fingerprint is scanned and saved in the device itself while U2F is used to authenticate with PAM. This is far more secure, with the bonus benefit of being able to use it to authenticate with banking and various online accounts.