Rugby will use mouthguard technology as part of its efforts to detect brain injuries suffered by players on the field. The smart technology, which measures the force of head impacts in real time, will send alerts to an independent matchday doctor to signal “a high level of acceleration which could lead to an injury,” global governing body World Rugby said Monday. World Rugby said it is investing 2 million euros ($2.1 million) in the technology to support unions, competitions and clubs.