Passkeys in Windows

Passkeys saved in windows show credential like email and user-id.
I have not signed in to Microsoft account though.
Just wanted to let everyone know about my observation.
Is it the same for Mac/Linux and Android/iOS?

I know Windows is not privacy respecting.

Depends on what you save there. Passkey consist of what you want it to consist, nothing more, being it mail/username + password +service these data corresponds to.

Its all the same for every OS out there.

I was asking because it exposes our email, user id and pseudonyms as well to the operating system.

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It’s unlikely that you’re actually hiding anything from the host OS, since you already trust it when you use it.