[tarxvf]

That would require I have my email on every device I might want to log in with.

I don't like that for a number of reasons.

[hombre_fatal]

The conventional password system requires you to have a shared password manager on every device or that your reuse or memorize passwords. And that none of the service's users reuse passwords.

It's all trade offs, else it would be easy.

[tarxvf]

I can access my password manager on my trusted device, and manually type in my password for whatever service on any other device. This is exactly what I do for the rare but important time when I need to login on a device I don't want to have total access to everything.

[miki123211]

Not to mention passkeys, which people seem to be so enamored with.