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I remember Microsoft making an announcement more than a year ago -- saying they are developing a way of passwordless authentication. Wonder what happened to that initiative. Have not seen much about that in recent times.

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I think it's webauthn, same thing being used here. Local device has a keystore, you can access it with face, fingerprint, PIN etc.

what happens when you inevitably lose said device and/or it lets out the magic smoke?

My understanding is that something in the TPM cannot be exported.

https://learn.microsoft.com/en-us/windows/security/identity-...

https://learn.microsoft.com/en-us/windows/security/informati...

Hi, sorry for the late reply. That is why in the screenshots you see the part with "account recovery options". Although there is the classical way with emails/sms, the other way would be to register an additional device for the account, for example by scanning a QR code, like in the screenshots.

Moreover, Google/Apple/Microsoft password's manager may sync your passkeys/credentials across your devices if enabled.

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