Maybe it would be better to make you type some characters on the keyboard. Similar tricks with outher human interface devices. That way the user physically can't do it with fake USB sticks.
It would require that all these devices have at least some basic functionality with only some standard drivers. I don't know how true that is right now.
It would require that all these devices have at least some basic functionality with only some standard drivers. I don't know how true that is right now.