CES 2015: SteelSeries Sentry eye tracker will have some Twitchy new tricks at CES

Tobii and SteelSeries showed off their eye-tracking Sentry gadget throughout last year, but at CES 2015 they'll introduce one of its coolest features yet.With the help of as-yet-unnamed "popular streaming personalities" the companies will show how the SteelSeries Sentry can track the vision of players streaming their gameplay on Twitch to show viewers exactly what they're looking at.Millions of Twitch viewers already tune in to their favorite streamers to watch how the pros play, and b