A Parent and Child Wear Eye-Tracking Devices while Playing on the Floor (image) Indiana University Share Print E-Mail Caption Levi and his mother, Elizabeth deSilva, interact with toys while wearing vision-tracking headsets. Credit Photo by Chris Meyer, IU Communications. Usage Restrictions None 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.