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Cases like a defenseless baseball game spectator being injured by a suddenly falling baseball indicate that spectators are exposed under the danger of being hurt by high-speed fly balls.
It is the original motivation that we devise the “Foul-ball alarm”.
Upon detecting any fly ball faster than 100km/hr the alarm will be triggered and making warning lighting and alarming sounds,
reminding spectators to be prepared in case.
Through this compact reminding-device, we hope to enhance the safety in the baseball field, making it a better entertainment space for every baseball fan.