Reebok is introducing a new light for the head, but it isn’t one that allows the wearer to see where he/she is going. Rather the CheckLight is meant to determine if an athlete has taken an impact to the head. The light is mounted to a skull cap that can be worn beneath any type of traditional sports helmet or just on its own.
The cap contains a tri-axial accelerometer and a gyroscope, to measure linear and rotational acceleration, respectively, while a built-in microprocessor analyzes their output whenever an impact occurs. This can help coaches and athletes stay in check with what is happening following a potentially serious impact.