Both the scientific research and public awareness around the danger of head trauma from contact sports have been growing rapidly over the last few years. The NFL has been forced into a settlement with former players and many have begun to question the long term viability of sports like American football and hockey for young children. The Checklight was developed by Rebooks advanced concept group, the same geniuses who brought you the iconic Pumps sneakers. By combining an accelerometer and a gyroscope into a small, lightweight package, the Checklight is able to measure both the strength of the impact and how your head is likely to respond to it.