The proposed retrodirective array (IMAGE) Engineering Caption A retrodirective array (RDA) enabled by specifically designed CMOS chips for two-way wireless communication demonstration, featuring automatic beam tracking and reduced beam pointing error. Credit Jiacheng Guo, Yizhu Shen, Guoqing Dong, Zhuang Han, Sanming Hu Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.