Cool Leaf is an input system that is both flat and mirrored. It comes from a Japanese company called Minebea who have demonstrated it with a keyboard, calculator, and remote control that are all completely free of keys.
Sure they look amazingly futuristic, but they also make a lot of sense. The devices would be easier to clean with no keys that will gather dust and crumbs. Minebea has done a great job. The devices have backlights, force sensors, and a film from a company called Toray Industries that is the world’s first “electrostatic capacity type touch panel and a load sensor.”