Earlier quoted context omitted.
If you save it via Passwords app, it'll be iOS / macOS mainly, but you can unlock with any Apple device that supports Passkey / Passwords app (so likely modern + reasonably updated) the easiest. If you want it to work "everywhere" then you CAN use your iOS / MacOS Passkey, it will show you a QR code, some places poorly support this, I believe both devices need bluetooth, and then it will authenticate it. Linux is the…
> Linux is the only oddball here, I had issues getting this flow to work. Take a guess why. Passkeys are just a trick for vendor lock-in disguised as a security practice.
Edit:
Apparently BitWarden should work, but my particular passkey was not on there.