N.Korea Still Jamming GPS Signals North Korea has been jamming Global Positioning System signals in South Korea since last Friday, it emerged. "The North kept jamming GPS devices as of Tuesday," a senior government official said Wednesday. "The attack isn't common knowledge because there's been no tangible damage, but it continues." There was one report that the GPS equipment of civilian aircraft near Incheon International Airport was faulty last Sunday. The official added the government identified Kaesong and Mt. Kumgang as the sources of the jamming attack. Interfering signals are sent out constantly, "so we can't say exactly when and...