Using Hooks for login prompt

[eluser]jedd[/eluser]
[quote author="macleodjb" date="1239336673"]I was reading up on hooks. I was curious how can i have it so i can force the user to login under certain controllers? For instance i only want them to login if they are under the control panel or view controller?[/quote]

I just read your [url="http://ellislab.com/codeigniter/user-guide/general/creating_libraries.html"]recent thread[/url] on converting an existing site .. and feel I should really clarify what you're trying to do in this instance.

Is there a particular reason you must use hooks?

What precisely are you wanting to achieve, and what other limitations do you have about the answer you're looking for?