Researchers have created a device that enables them to electronically steer and focus a beam of terahertz electromagnetic energy with extreme precision. This opens the door to high-resolution, real-time imaging devices that are hundredths the size of other radar systems and more robust than other optical systems. News Source: https://news.mit.edu/2022/terahertz-energy-images-high-resolution-0218 ... https://www.youtube.com/watch?v=N4SE5Zi9_QE

When your robot vacuum cleaner does its work around the house, beware that it could pick up private conversations along with the dust and dirt. Computer scientists from National University of Singapore (NUS) have demonstrated that it is indeed possible to spy on private conversations using a common robot vacuum cleaner and its built-in Light Detection and Ranging (Lidar) sensor. The novel method, called LidarPhone, repurposes the Lidar sensor that a robot vacuum cleaner normally uses for navigating around a home into a laser-based microphone to eavesdrop on private conversations. Research Paper: LidarPhone: acoustic eavesdropping using a lidar sensor: poster abstract https://dl.acm.org/doi/10.1145/3384419.3430430 News Source: https://news.nus.edu.sg/robot-vacuum-cleaners-can-spy-on-private-conversations/ Playlist for Technology News Videos - https://www.youtube.com/playlist?list=PLK2ccNIJVPpB_XqWWq_oaZGIDzmKiSkYc Artificial Intelligence - https://www.youtube.com/playlist?list=PLK2ccNIJVPpBqKHdezLeaUzIp85DxFu7_ Robots and Drones - https://www.youtube.com/playlist?list=PLK2ccNIJVPpARGjc01A-FtY4tYlB21lQA ... https://www.youtube.com/watch?v=BIa3RIDUg84