How does/can technology improve PE without taking away from the fun and engagement of physical activity?

Technology can improve PE in many different ways.  Not only can it help students track their progress during a multitude of activities, but it can help them analyze their results as well.  Things such as heart rate monitors and fitness trackers give students instant feedback on the work they are doing which is something that children in today's society seek.  Through the use of video whether on a camcorder or iPad we are able to play back back performances immediately after they are finished and analyze our strengths and weaknesses.  Students are able to use any device that is connected to WiFi to research different health topics or ideas for exercise giving them more of a sense of inclusion and achievement.  I think the greater question would be how could technology ever make PE less fun or engaging?  This question would be much harder to answer and definitely have fewer examples to give out.