[drdaeman]

> With a password, I don't need to use a software product.

Formally, you still need a computing device with software that allows you to input and transmit the password, as well as any related challenges. (E.g. you may have hard time logging in on a device that doesn't have a physical or full virtual keyboard, like a TV - I literally had to grab a laptop and change password once because there was no character on the virtual keyboard that I needed to "type".)

While public-key cryptography isn't really doable on pen and paper, I don't see anything fundamentally wrong with requiring to perform some computations, as long as every step is documented and end-user fully and completely has access and owns their credentials. "You won't have a calculator^W computer" was the biggest lie from my childhood - everyone does, or can, including full control of ownership of the device if desired.

Of course, this is not the case with how Passkeys are currently implemented, as the corporate is extremely hostile against even idea of letting user to export "their" "own" keys.