An iOS developer named Nathan Gitter has released a new iOS game called Rainbrow that stands out for its novel use of the iPhone X's facial recognition technology. Users control the action in the game by moving their eyebrows up or down: High eyebrows cause the emoji character to jump up. Low eyebrows cause the emoji to move down, and neutral eyebrows cause it to stay in the same place.
Although the app isn't particularly flashy or polished, it could point toward a new trend in mobile development. According to MacRumors, "Gitter told us he believes there is a lot of future potential for face-based apps, especially for those that improve accessibility. He pointed us to another face-controlled game that was released earlier this week, Nose Zone, which tasks players with destroying targets by pointing at them with their nose."