Explore a cutting-edge acoustic eavesdropping technique in this 17-minute IEEE conference talk. Delve into the innovative mmEcho method, which utilizes millimeter-wave technology for remote sound capture. Learn how researchers Pengfei Hu, Wenhao Li, Riccardo Spolaor, and Xiuzhen Cheng from Shandong University have developed this novel approach to acoustic surveillance. Gain insights into the principles behind mmWave-based sound detection, its potential applications, and the implications for privacy and security in various settings. Understand the technical challenges and solutions involved in implementing this advanced eavesdropping method, and consider the broader impact of such technology on future surveillance capabilities.