MagTrack (IMAGE) Georgia Institute of Technology Caption A squint is an example of a facial gesture that MagTrack can detect and issue a discrete command to control a connected device. Credit Georgia Tech Usage Restrictions N/A License Original content 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.