I used the conductive paint used for car rear windows as I mentioned, that came in a small bottle with the brush attatched to the lid- no good, I just dipped in a pointed scalpel blade and used that, any pointed object would do. I've heard a lot of tales about thepencil "wearing off" I dont see how it does but it seems to, which is why I chose a more permanent solution.
Next time you wave - use all your fingers