Mm-hmm.
This is the the parts of the working design that need to be figured out. And  personal preferences , besides the fact that I can't spell , we need a long-lasting energy source , people don't wanna be changing it a lot. We need a chip that works well with the user interface , that isn't too complicated. We need a straightforward interface , like Ian was saying , simple , not overwhelming it with information and we need a reliable and clear infra-red signal , so that you're not waving your remote around
Mm-hmm.
and having to get frustrated and go do it by hands. So that's pretty much it for the working design.