India’s Defence Research & Development Organisation (DRDO) has developed Through Barrier Imaging Radar, named 'Divyachakshu' (divine eye), that can look though walls of 20-30 cm thickness made of any material by using thermal imaging. The radar tracks heat on the other side of the wall and gives real time thermal image, which can disclose the movement, number of people and other important information about the situation on the other side of the barrier.
