OK, so firstly I expect to be completely shot down here with a bunch of "this is useless" comments, but hey:
What if, in conjunction with the usual password-based login, there was an added PIN (basically drop-down select menus with 0-9, or just an input box) as an extra precautionary measure. The PIN would only be used in the admincp and you could probably masquerade it by making the pin only appear after you've entered the correct password so that people don't know a pin is required until already having the correct password.
I figure it's a small addition that other forums haven't used that could possibly help secure the ACP a little bit more.
What if, in conjunction with the usual password-based login, there was an added PIN (basically drop-down select menus with 0-9, or just an input box) as an extra precautionary measure. The PIN would only be used in the admincp and you could probably masquerade it by making the pin only appear after you've entered the correct password so that people don't know a pin is required until already having the correct password.
I figure it's a small addition that other forums haven't used that could possibly help secure the ACP a little bit more.