Stanford University engineers have developed a modified Xbox controller that could make sure youre enjoying your video games as much as possible. Using a 3D-printed module containing various sensors, the controller measures heart rate, blood flow, breathing and other bodily functions to see how engaged a user is with a game. The hope is that in the future the game will receive this feedback and adjust itself to better hold the players attention. This means video games could become a lot more entertaining as they learn to become easier or harder, based on what the individual player wants. …