News Chrome and Android are about to kill passwords — here's how

Oct 16, 2022
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As passkeys are stored on your phone, what happens when you want to upgrade to a new device?

Not sure what this is saying. If it's saying that the phone stores the private key for an auth request originating on a desktop, I don't think that's the case. The phone serves as a biometric presence because a lot of desktops don't have biometrics, but a phone isn't required for webauthn. Phone and desktop set up a BT connection, which handshakes to open a more secure connection, but that doesn't transfer a private key to the phone in a desktop scenario.

This is explained better here
Ars Technica: Death to passwords: Beta passkey support comes to Chrome and Android.
 

USAFRet

Illustrious
Moderator
Didn't Microsoft say something similar a while ago?

Oh yes, they did:

2018

2021
https://www.pcmag.com/news/microsoft-accounts-no-longer-require-a-password

2022 (along with google and apple)