When big-money NFL careers are at stake, the use of impact-measuring sensors in football helmets isn't as routine as one might expect. The NFL Players Association's Mackey-White Committee, which spearheads player safety initiatives, spent considerable time discussing not only the potential health benefits of helmet sensors, but also the legal and ethical pitfalls that come with them in mid-April. Committee members made it clear the NFLPA wants to pursue placing sensors in helmets as soon as the technology meets its standards. More...