checked out. >> come pettive to athletes may not want to be benched because of a blinking light but a yellow or red one doesn't always mean game over. justin stanley coaches the wild cats junior hockey team in randolph, new jersey. this season the team put check light to the test. >> have you you seen some lights on the ice. >> we had a couple of yellow and had the boys checked out. >> some people will wonder if check light can be abused. if you are going to see teenager boys thinking it is a good idea to light each other up. are you seeing that? >> it goes away after the first little bit of getting used to having the technology. they stop that pretty quick. >> if check light or similar technologies are proven to be effective, the hope is that in a rough game tough players won't be left with permanent damage.