GoalRef is an association football goal-line technology system developed by German research institute Fraunhofer in association with Select Sport. It works by detecting the passage of the ball using magnetic induction. Along with Hawk-Eye, GoalControl and Cairos it is one of four systems approved for use in the professional game by the International Football Association Board (IFAB).
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).