Of all the things we saw at CES, Tobii’s eye-tracking Gaze interface was one of the most memorable, even if the execution was a bit flawed. Now the company’s back with a next-gen sensor that fits on a single board and is 75 percent smaller than the iteration we saw at CES — a milestone that will presumably allow it to accommodate a wider range of devices. Tobii also says the IS-2S eye tracker consumes 40 percent less power than its predecessor and will be cheaper to implement, though the company doesn’t specify how much it’ll cost. It’s also unclear which Windows PC and tablet makers will take a chance on the technology, though that won’t necessarily stop us from getting an early demo at CeBIT this week.