I think he might be referring to single device vs multi device pass keys https://developers.yubico.com/Passkeys/Passkey_concepts/Single_device_vs_multi_device_

I think he might be referring to single device vs multi device pass keys https://developers.yubico.com/Passkeys/Passkey_concepts/Single_device_vs_multi_device_credentials.html https://developers.yubico.com/Passkeys/Passkey_concepts/Sing... I wouldn't be surprised if password managers implement sharing between users tho