7. The Vitality Sensor preceded emotion-reading controllers
At E3 2009, Nintendo revealed the Vitality Sensor, an accessory for the Wii that would measure a player’s vital signs through their finger. People at the press conference (and indeed all around the world) openly laughed at the announcement, failing to see any practical use for the product. Nintendo eventually cancelled it after allegedly failing to get it functioning properly. Definitely not because it was the most ridiculous thing in the history of all things.
The idea of monitoring someone's physiological response to gaming, however, has not died with the Vitality Sensor. In fact, it might be the future of gaming. Kinect 2.0, which comes with--sorry, 'optionally comes with'--Xbox One, has heart-monitoring technology, which means the Kinect can not only see you, it can see inside of you. Allegedly. Also, engineers at Stanford University are looking into game controllers than can gauge the player's emotions during gameplay. And as recently as last month, a Kickstarter attempted to fund a survival horror game that uses gamers' heart rates against them. It is an avenue of gaming with potential, but it just needs a killer app to convince everyone. Maybe if developers had found a good way to use the Vitality Sensor in a Mario game, we'd all be wearing them at this very moment. As it is, the Vitality Sensor idea sadly flat-lined.