Macbook Pro, completely broken keyboard, can't login!

I have 15 inch macbook pro and the keyboard recently stopped working completely. None of the keys work. I got a wireless apple keyboard, to fix the problem. The issue is that I need to login in order to set up the external keyboard, and since the keyboard is broken, I obviously can't login. My trackpad still works though.

Is there a way to login if nothing on my internal keyboard works. Please note, the answer can't be some sort of reset for which I need to push any keys - I have tried these, and they don't work, because the keyboard doesn't work.

Thanks!!