Diagram of 3-D Football-Tracking Technology (image) North Carolina State University Share Print E-Mail Caption Researchers have developed a system that can track a football in three-dimensional space using low-frequency magnetic fields. Credit David Ricketts Usage Restrictions Image credit must be given. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.