Karen Lightman is executive director of MEMS & Sensors Industry Group. She began exploring microelectromechanical systems in sports a few years ago when her daughter sustained a serious concussion while skiing. Lightman realized that a more advanced ski helmet, with built-in MEMS-based concussion-detection technology, could have provided potentially valuable information to her daughter’s medical team. She also suggests that sensors in ski-lift passes might help detect dangerous skiers and prevent accidents.