ETRI_AR on Subway (2 of 2) (IMAGE) National Research Council of Science & Technology Caption A base station installed in subway track side of tunnel. Credit Electronics and Telecommunications Research Institute(ETRI) Usage Restrictions The sources of photos and research results from ETRI must be specified. License Licensed 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.