[Boulth]

> Is there a setting that allows that "push to allow" for a short while?

Yes there is. In a newer firmware.

> 2) when I ssh into a system and touch the button to allow it, and the push allowed the use of they key for a short while, am I not in the same problem as before - as the system may be compromised and may be performing other operations I'm unawares of?

Yes but the window of opportunity for the attacker is smaller. Also: it's your setup that requires multiple key operations within short time interval, for some people touching every time is sufficient and most secure.