We've touched and tapped our way through a variety of gadgets at CeBIT, but it's the devices that operate without traditional user interfaces that have really grabbed our focus. Tobii was on-hand to demonstrate its eye-tracking technology earlier this year at CES, but the company is peddling its wares here in Hannover as well, and we decided to drop by for a second look. This time, it's all about gaming, with EyeAsteroids drawing quite a bit of attention on the show floor. The demo pairs Tobii with a S
