Zoo of FIDO2 security keys

Last year, I started my journey to passwordless logins. I bought my first FIDO2 USB security key. Then, I added the key as an alternative to time-based one-time passwords (TOTP) to my online accounts where possible. Over time, I got more FIDO devices and also enabled an IBM Cloud tutorial on end-to-end security for passwordless support. What I learned through the