Comment by OkayPhysicist

“Once I set up a passkey I can’t log in from another device”

This literally happened to my grandfather yesterday (well, I found out about yesterday, anyway). Dude just casually mentions that he can only log into his webmail on his iPad, and I immediately knew what was up.

"so don’t. Use bitwarden or 1Password or lastpass or whatever you want to store your passkeys." -- All fine and dandy until they decide to start using that attestation feature that they 'pinky promise' they won't use for nefarious purposes.

Passkeys are literally evil, and exist exclusively because 1) companies are evil, and want nothing short of complete and utter domination of their users' lives and 2) one CEO is embarrassed that he was too stupid to realize that "my password manager isn't autofilling" means "I'm on the wrong website".