Free Republic

Deep in the Otay Mountain Wilderness, there is no wall... But it is fertile for an invisible kind of fence, one built of artificial intelligence, radar, drones, sensors, motion-activated cameras and even lidar, the technology used in self-driving vehicles... An electronic fence is not about preventing intrusion as much as it is about detecting intrusions and then intercepting them. While even the strongest proponents for such a technological solution admit that physical barriers are probably best in urban areas like San Diego and El Paso, Texas, they see a virtual wall as a cheaper and more effective way to police...