Eighteen-year-old Jay Jung noticed something while walking with his grandparents one day in Daegu, South Korea. They often couldn’t make it across the street before the light changed. So, Jay decided to do something about it. He created SmartBlink, a traffic light system that detects how quickly pedestrians are moving and gives them enough time to safely cross. It can even recognize wheelchairs and crutches. Jay’s invention earned first place in his category at the 2026 Regeneron International Science and Engineering Fair in Phoenix, AZ. He’s now hoping SmartBlink can one day be used in communities around the world. But the best reaction came from his grandparents. They were touched to learn Jay had noticed those difficult moments and turned them into an idea that could help others.