Asian Correspondent.com interviews Kim Hyeong Soo, who defected from North Korea in 2009. He explained that radio was virtually the only way he and others in North Korea knew anything about the outside world. "I was able to have access to a radio and have access to the outside world. The most popular channels are all from America, especially Radio Free Asia and Voice of America. Had I not had the radio, I would not have known anything about the outside world, so those are the two biggest things that motivated me.... Radios are important, but so are other methods. With the recent technological advances in North Korea, people now have limited access to phones and laptops, so there could be USB sticks containing important information going into the country. Paper flyers are also important. People have also mentioned sending information through a satellite. There are a lot of methods, both hardware and software. We need to research which is the most effective."