I am trying to enable two-factor authentication (2FA) on a Google account, but I'm running into a dead end trying to activate it.
I'm using an up-to-date Firefox browser.
When I try to enable 2FA, Google offers me three options:
- SMS code
- Security key
I am not looking for SMS-codes (considered deprecated as a security measure) or Google-prompt; I would like a full 2FA solution.
A security key is an option, but apparently, I can't use it because Google doesn't offer WebAuthn (which my browsers support), but offers the older FIDO U2F standard instead. The option to activate a security key just silently fails.
That leaves no options in that list, but to my knowledge, Google also supports TOTP authentication. To activate this Google documents a process where I go to the settings of their Gmail app on an Android or IOS smartphone, but I have neither. I do have a device that supports TOTP authentication: I just need the secret key or the QR-code.
How can I get this TOTP key and activate TOTP 2FA in my Google account?