Disabling Keyboard input

I am working on a simple password screen for my 4.1 box. Using Hollywood for the interface (because I love it), but I want to see if there is something i can write that will disable all keyboard inputs. Including soft rebooting. The closest thing I can come to is to create and load a blank keymap file during boot, then inside of hollywood load the correct keymap once the password is entered correctly.

How can you enter a password without a keyboard? Well, I'm using a numerical phone layout for the password entry. So it needs no keyboard input. The blank keymap works great and doesnt allow you to close the holywood screen, but it still allows a soft reboot. Though I'm sure I can probably live with that.

Any ideas on a simple app that will completely ignore all keyboard inputs?

Thanks all!